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ensou1 Enso @ensou1 mentions
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The 787 uses cabin air compressors (CAC) for its air conditioning system and pressurization. Each ...
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The 787 uses cabin air compressors (CAC) for its air conditioning system and pressurization. Each PACK has two electrically operated CACs and have different types of operation depending on power source, passenger count, ground mode and air mode. The CACs draw the air from outside and release ... The 787 uses cabin air compressors (CAC) for its air conditioning system and pressurization. Each PACK has two electrically operated CACs and have different types of operation depending on power source, passenger count, ground mode and air mode. The CACs draw the air from outside and release it at a high pressure and hot temperature to the heat exchanger. Cold air enters through the ram air inlet and goes to the heat exchangers to help remove some of the heat from the CAC air. Ahead of the CAC inlet is its deflector door. It is there to prevent FOD from entering the CAC during landing and ground operations but when the outside temperature is too high (about 95°F ) or there is a fault, the deflector door will close. The small door below the CAC inlet is the alternate ventilation system (AVS). There’s only one and is located on the left side. The door opens when there is a complete loss of conditioned air ⚠️This would be both PACKs failed or one engine operation in a critical phase of flight such as takeoff ⚠️ When the door opens, the air is directly distributed to the cabin an flight deck bypassing the PACKs as the ducting is separate from the ram air and CAC inlet. The operation of the AVS is automatic but the pilot can manually operate it by a push of a button if the situation requires it. The 787-9 however uses the outflow valves for the AVS. The valves position themselves in a way to draw the air and send it to the cabin and flight deck.
#dreamliner #787 #boeing #megaplane #avgeek aviation
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Perhaps the most recognized anti ice protection on a spinner is the rubber tip found on the IAE and ...
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Perhaps the most recognized anti ice protection on a spinner is the rubber tip found on the IAE and RR engines. The GE90 and GEnx are also amongst the few engines to incorporate anti ice protection on their spinners. The GE90 & GEnx use hot air to warm up the spinner. This air is the same one that ... Perhaps the most recognized anti ice protection on a spinner is the rubber tip found on the IAE and RR engines. The GE90 and GEnx are also amongst the few engines to incorporate anti ice protection on their spinners.
The GE90 & GEnx use hot air to warm up the spinner. This air is the same one that is vented from the oil sumps similar to that of the vent tube on the exhaust. The air passes through a little hole on the impeller air oil separator that is behind the spinner. Only a small amount of air passes through and at a low pressure. The air warms up the spinner from the inside and it then seeps out of the spinner support ring to then become part of the intake air ⚠️this is not bleed air as that used to de ice the intake nacelle⚠️ There’s also a post on this exhaust vented air from a while back if you’d like to refresh your memory.
The rubber tip found on some spinners oscillates or wobbles to break up the ice or even try to prevent it from forming. Although it proves useful, it is not always the case as you can see from one of @nonrevnick photos were an A320 arrived with an iced spinner. The rubber tip missing is actually a No Go item so watch out for that during your walk around. Not all spinners have an ice prevention system though. The shape of the spinner and extreme weather affects how ice builds up but that information is for a different post. Go check out @nonrevnick for more photos from the ramp in Denver and soon from around the world’s airports as he’s becoming a flight attendant. Congratulations Nick!
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Have you seen a 777-300 with wingtips removed? I’ve talked about this before and it is rare to see ...
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Have you seen a 777-300 with wingtips removed? I’ve talked about this before and it is rare to see one flying in this configuration. Today was the day if you’d like to know more about the removed wingtips, I’ve made two posts on this before. One on the 787 and one on the 777. You’ll have to search ... Have you seen a 777-300 with wingtips removed? I’ve talked about this before and it is rare to see one flying in this configuration. Today was the day 😍 if you’d like to know more about the removed wingtips, I’ve made two posts on this before. One on the 787 and one on the 777. You’ll have to search for them though. #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Can you open a door on a pressurized aircraft mid flight? You cannot. There are a few reasons why you ...
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Can you open a door on a pressurized aircraft mid flight? You cannot. There are a few reasons why you can’t open a door. First is the design of the door. Most airplanes use a plug type door in which the door fits into its frame and uses the differential pressure to its advantage to seal itself in ... Can you open a door on a pressurized aircraft mid flight? You cannot. There are a few reasons why you can’t open a door. First is the design of the door. Most airplanes use a plug type door in which the door fits into its frame and uses the differential pressure to its advantage to seal itself in place. Perhaps the most widely known reason why the door can’t be opened is because of the difference in pressure from inside the cabin and outside. Another reason why you can’t open the doors is because the doors are flight locked. When the aircraft has a speed of 80 knots (about 90mph), the air data computers, the aircraft information system, and electrical management system send signals to a motor actuator in the door. The motor controls an actuator that moves a locking lever onto the torque tube that is connected to the door handle and prevents it from turning. You will not be able to move the handle because of this lock. If the motor fails, the spring around the actuator would move the actuator to the unlock position. All this is automatic and there’s no action from the pilot, however the pilot will receive a message if the lock is not in the appropriate position. Another reason is the direction in which the doors open. The doors open against the flow of the airplane. Let’s say you do manage to open the door, you will have to go against the pressure being put on the door when going 400+mph.
Would I be worried if someone would try to open a door in flight? Not at all. Just sit back, enjoy the flight and watch the person get tackled to the ground.
Now, what I mentioned applies to some of Boeing airplanes and not all airplanes have a flight lock feature. I am curious however if Airbus or other manufactures do happen to have a feature like this. Let me know by leaving a comment below👍
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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She’s good to go. Will she go to Rome?<span class="emoji emoji1f625"></span> #b777 #777 #boeing #boeinglovers #airline #instagramaviation ...
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She’s good to go. Will she go to Rome? #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek She’s good to go. Will she go to Rome?😥
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
Have you heard of an override engine start? First we need to know what the starter is and what it does. ...
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Have you heard of an override engine start? First we need to know what the starter is and what it does. The starter is an air turbine motor that is operated from a bleed air source in order to motor the compressor to an adequate speed so that the initial combustion is efficient and less strain is ... Have you heard of an override engine start? First we need to know what the starter is and what it does. The starter is an air turbine motor that is operated from a bleed air source in order to motor the compressor to an adequate speed so that the initial combustion is efficient and less strain is placed on the internal components of the engine. The air source comes from either the APU, opposite engine, or an external air source (air cart). The starter air valve opens so that the air can spin the turbine inside the starter. The turbine then turns the gears in the starter to drive the shaft to turn the gearbox.
What is the auto start, manual start, and the override start? All three start systems first require the pilot to move these switches in their respective position: the auto start switch, ignition switches, and fuel switches. In the auto start, the FADEC is controlling and monitoring nearly everything including faults and restart attempts (up to three). In the manual start, the pilot has a little help from the FADEC but will not monitor the engine’s parameters. The pilot will have to keep an eye on when to add the fuel and correct any problems if any.
The override start requires both the pilot and the mechanic when the starter air valve has failed.
In a normal situation, the FADEC would command the air valve but when it has failed, we have to open it manually. When the pilot gives the signal to the mechanic that it’s time to open the valve, the mechanic will have to (depending on engine) insert a 3/8” drive extension and turn, push a button, or turn a handle. After the pilot tells us to close the valve, we carefully walk away from the engine to avoid getting sucked into it. Now, the override is different from an air start. The air start is used when the APU bleed is inop. You then need that awful screeching cart to supply the air. An air start is possible with an override condition though. The video shows the 777 override. You can see how pulling the handle and turning can open the valve but if you’d like to see more ramp action, take a look @ground_to_flightdeck Always something different 👍
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The 777 has only one total air temperature probe. The TAT’s function is to provide some of the aircraft’s ...
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The 777 has only one total air temperature probe. The TAT’s function is to provide some of the aircraft’s navigational and flight control computers with outside temperature readings and air pressure. So why is the TAT blowing out air? When flying, ram air enters the probe and provides the ... The 777 has only one total air temperature probe. The TAT’s function is to provide some of the aircraft’s navigational and flight control computers with outside temperature readings and air pressure. So why is the TAT blowing out air? When flying, ram air enters the probe and provides the sensor with the pressure of the air and its temperature. On the ground however and at slow speeds, air doesn’t enter the probe. There is a line inside the probe that comes from the left pack to supply the air. This air blows directly overboard to simply cause a vacuum to draw in the air from outside and give a better reading of the temperature. The temperature sensor and air supply line are both inside the probe but kept separated so that the air line doesn’t affect the sensor. This air is not for anti icing of the probe as it already has a built in heater. The TAT on the 777 only works when the plane is in flight mode ⚠️never touch the TAT probes, Ice detectors, AOA vanes, and pitot tubes on any airplane⚠️ you never know when the heater will be on. Different planes have different heater operation logic. Also, some airplanes have two TATs and get the air supply from the engine or APU. Next time when you do a walk around and you have the air supply on, stand near the TAT and you may be able to hear the air blowing. If you work around the TAT take caution of the air. It is not hot but something to consider.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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If you’ve worked on airplane engines or just simply done a walk around, you may have noticed that ...
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If you’ve worked on airplane engines or just simply done a walk around, you may have noticed that certain components appear higher than they do as compared the other engine. For example, without having to open the engines you’ll notice that the oil access door is placed at different heights. ... If you’ve worked on airplane engines or just simply done a walk around, you may have noticed that certain components appear higher than they do as compared the other engine. For example, without having to open the engines you’ll notice that the oil access door is placed at different heights. When you open the engine, you’ll again notice that certain components like the IDG, fuel pump, etc. will also have a different height. If the engines are designed the same and placed at the same distance from the fuselage, and the main gear shock strut (chrome) extensions are at the same height, how does this happen? Well, all you have to do is look at the wings. The wings slant upwards causing what is known a dihedral angle. This is measured from the wing root to the wing tip and its main purpose is to provide better lateral stability (roll) of the airplane. The greater the angle the more noticeable this will be. The 767 and 777have a 6 degree dihedral, 747 has 7 degrees, and the Bombardier Q400 a minor 3 degrees. *this does not include the wing flex* Every engine type is different and component location changes but the same principle applies when a dihedral angle is present. Military planes like the C5, C17, and Harrier have the opposite known as anhedral where the wings slant downwards. The angle here does not work for roll stability but rather increase its effect for maneuverability.
If you‘d like to see more photos from Hong Kong and Hawaii, check out @hoi_cyh and @hnlramper for some really great photos👍 #777 #747 #q400 #c17 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation ...
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#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
So what is that oval looking thing on the oxygen mask panel? That thing is simply a tab that acts as ...
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So what is that oval looking thing on the oxygen mask panel? That thing is simply a tab that acts as a stop when performing an oxygen mask drop test or even an operational check of the O2 compartment latch. The way it works is simple. The tab pulls out and it’s turned. You’ll be able to see a red mark ... So what is that oval looking thing on the oxygen mask panel? That thing is simply a tab that acts as a stop when performing an oxygen mask drop test or even an operational check of the O2 compartment latch. The way it works is simple. The tab pulls out and it’s turned. You’ll be able to see a red mark that serves as an indicator that the tab is out even if it is not turned. Just as in one of the pictures, if the tab is flush with the panel and you can faintly see the red mark it is of no concern. In the event the passenger O2 needs to be used, either the aircraft will automatically deploy all the masks and start oxygen flow or the pilot will drop them by a simple push of a switch. In a maintenance situation, we would close all oxygen cylinders and pull and turn those tabs so that when we release the masks, the tab catches the door preventing it from fully opening and deploying all the masks. The stop will allow a sufficient gap for us to do the required inspections. If that tab is not pulled out, you will deploy ALL masks in the cabin and you will have to repack them all. Can you imagine that happening in an A380 and 747?
One thing to considere is that not every airplane has these types of stops but have a different method with similar function. The 777 has a slot where you will have to insert a special tool or an option is given where you can use tape. Airplanes that don’t have a manual deploy switch don’t have don’t have stops. #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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So is that smoke coming from the exhaust oil or fuel related? It’s oil related but where is it coming ...
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So is that smoke coming from the exhaust oil or fuel related? It’s oil related but where is it coming from and why? This smoke is more noticeable after engine shutdown but it can also be seen while the engine is running. The smoke coming out of the vent tube is normal and of no concern. First we need ... So is that smoke coming from the exhaust oil or fuel related? It’s oil related but where is it coming from and why? This smoke is more noticeable after engine shutdown but it can also be seen while the engine is running. The smoke coming out of the vent tube is normal and of no concern. First we need to start at the oil tank. The oil tank stores the oil and can hold 28qts. The oil first goes to the lube & scavenge pump where it’s distributed to the engine bearings in their designated sumps (A,B,C) and for gearbox lubrication. The oil will then go to other components and then return back to the oil tank to repeat the cycle. The oil reentering the oil tank comes with air that is produced by the scavenge pump. The air is separated from the oil by the DMS air/oil separator (Debris Monitoring System for collecting metal particles coming from the engine bearings and gearbox) in order to help pressurize the oil tank. The air you see coming from the vent tube is some of the air being vented away from the oil tank and from the engine sumps. Most of the time you’ll see oil accumulated on the exhaust, some is wet and some already old and crusted. The vented air will hold some oil and therefore it will accumulate. ⚠️ when doing a walk around soon after engine shutdown, be careful of the vent tube. Don’t stand underneath it as very hot wet oil may have accumulated at the opening and can fall down on you. The 787 got me this way and I learned the hard way ⚠️
#b777 #777 #787 #b787 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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So is it possible for the 777 to fly with both red beacon lights inop? Yes. Not only can you fly with ...
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So is it possible for the 777 to fly with both red beacon lights inop? Yes. Not only can you fly with the light inop but you are also allowed to completely remove the lens cover and continue to fly. Just like the wingtip removal, you can only fly during the day. The red beacon serves as part of the ... So is it possible for the 777 to fly with both red beacon lights inop? Yes. Not only can you fly with the light inop but you are also allowed to completely remove the lens cover and continue to fly. Just like the wingtip removal, you can only fly during the day. The red beacon serves as part of the navigation lighting system (anti collision) and you need that at night. For example, if the lens cover is cracked and no parts are available, you got this option for the lens removal. You have a better chance at seeing one light inop as both lights rarely go bad at the same time but your chances of seeing at least one lens cover missing is even rarer.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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We know that the plane can be dispatched for a limited time with a worn tire to the point cord is showing. ...
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We know that the plane can be dispatched for a limited time with a worn tire to the point cord is showing. However, the bolts that keep the wheel halves together is critical. The question is, are you allowed to have at least one tie bolt missing? Yes, you are allowed but only one per wheel. Reason ... We know that the plane can be dispatched for a limited time with a worn tire to the point cord is showing. However, the bolts that keep the wheel halves together is critical. The question is, are you allowed to have at least one tie bolt missing? Yes, you are allowed but only one per wheel. Reason for a missing bolt is that the bolt may have broken or the nut come loose causing the bolt to fall off. For Boeing aircraft, you have a maximum of five takeoffs before the tire and wheel have to be replaced. Before the plane departs, the wheel has to be inspected for any further damage. Again, it’ll be difficult to encounter this situation as airlines have plenty of tires in stock and tires can be replaced in a reasonable time👍 always verify with maintenance for the appropriate action to be taken. Different planes have different requirements. #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Just like the 787, you are allowed to fly without the wingtips on the 777. Both wingtips must be removed ...
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Just like the 787, you are allowed to fly without the wingtips on the 777. Both wingtips must be removed and of course no night operations due to navigation lights removed as well. The 777 will have speed and weight penalties but that is something that the pilot will have to take care of. Like ... Just like the 787, you are allowed to fly without the wingtips on the 777. Both wingtips must be removed and of course no night operations due to navigation lights removed as well. The 777 will have speed and weight penalties but that is something that the pilot will have to take care of. Like I said before, it’ll be extremely rare to see a 777 fly in this condition but it is possible. Perhaps more possible for short domestic flights.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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I just received this video by @karma_has It shows perfectly what I described in the previous post on how the centering system works and other gear components. Go check out his page for more interesting posts like this. Thanks again man #b777 #777 #boeing #boeinglovers #airline #instagramaviation ... I just received this video by @karma_has It shows perfectly what I described in the previous post on how the centering system works and other gear components. Go check out his page for more interesting posts like this. Thanks again man 👍 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Does the nose gear center on its own or does the pilot center the nose gear when the gear is retracting? ...
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Does the nose gear center on its own or does the pilot center the nose gear when the gear is retracting? Well, the nose gear centers on its own but how does it work? When the pilot moves the gear handle up, the retraction sequence of the gear begins and many components begin to operate. One of them ... Does the nose gear center on its own or does the pilot center the nose gear when the gear is retracting? Well, the nose gear centers on its own but how does it work? When the pilot moves the gear handle up, the retraction sequence of the gear begins and many components begin to operate. One of them is the lock actuator and what it does is keep the gear locked in the extended position and unlock the gear for the retraction process.
The lock actuator attaches to the lock links (where you put the landing gear safety pin) which contains lock springs on both sides to help keep the lock links in position and also transfer movement to the centering mechanism.
When gear up command, the lock actuator will unlock the lock link to allow gear retraction. The link movement will move a spring cartridge which then turns a crank and then a cam assembly (inside a cover). The cam assy will move up and come into contact with a cam roller that connects to the pivot link (remember previous steering post?). The cam assembly will guide the cam roller into the center if the steering is not centered and keep it there. The extension process is just opposite operation of this system. Also, if you’ve wonder why you install the gear safety pins, it is for this reason. If the pins are installed and the gear handle is moved up, the lock actuator won’t unlock any of the lock links in the nose and main gear. If you don’t install the safety pin, well... we’ve all seen videos of the nose gear collapsing and that’s never good.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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This was as high as I could get. Didn’t expect the winglet to be very big 😕 #a350 #airbus #airline ...
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This was as high as I could get. Didn’t expect the winglet to be very big 😕 #a350 #airbus #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviation #megaplane #avgeek This was as high as I could get. Didn’t expect the winglet to be very big 😕
#a350 #airbus #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviation #megaplane #avgeek
So how can you tell if the nose gear is centered? If you look at the gear you’ll see three stationary ...
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So how can you tell if the nose gear is centered? If you look at the gear you’ll see three stationary black triangles on the left, aft center, and right side. There’s also two small scales on the left and right side that move when there are steering inputs. When you do a full turn of the steering, ... So how can you tell if the nose gear is centered? If you look at the gear you’ll see three stationary black triangles on the left, aft center, and right side. There’s also two small scales on the left and right side that move when there are steering inputs. When you do a full turn of the steering, one of the scales will match with the center triangle. For example, on a full left turn the 0 on the left scale should match the center line on the center triangle and vice versa. When hyd pressure is applied to the steering it’s supposed to mark neutral at 0 but you are allowed a very small deviation of about plus or minus 1.5 degrees. You have a higher chance of seeing a bigger difference in degrees when the tow bar is disconnected as sometimes the tug doesn’t stop in a straight line. It’s hard to see in the video but you’ll be able to see the scales and triangles at work when there’s a full turn.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Whoa! Am I in Japan!?😯 nope but I sure damn wish I was <span class="emoji emoji1f62d"></span> #b747 #747 #787 #b787 #allnipponairways #boeing ...
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Whoa! Am I in Japan!?😯 nope but I sure damn wish I was #b747 #747 #787 #b787 #allnipponairways #boeing #boeinglovers #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek Whoa! Am I in Japan!?😯 nope but I sure damn wish I was 😭
#b747 #747 #787 #b787 #allnipponairways #boeing #boeinglovers #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek
If you’ve been around Boeing airplanes, you might have seen these cables on your walk around. The ...
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If you’ve been around Boeing airplanes, you might have seen these cables on your walk around. The 737/47/57/67 and 777 have this function except the 787. What these cables do is help in the steering. These cables are separated in two parts: upper loop and the lower loop assembly. The upper ... If you’ve been around Boeing airplanes, you might have seen these cables on your walk around. The 737/47/57/67 and 777 have this function except the 787. What these cables do is help in the steering.
These cables are separated in two parts: upper loop and the lower loop assembly.
The upper loop is connected to the both the captain’s and FO’s steering tillers. Under the flight deck floorboard, the cables are routed through gearboxes and pulleys that go aft and stop right by the main battery. By the main battery there is a steering input mechanism that connects to the pivot link found outside. This input mechanism transfers the steering to the lower loop cable assy that you see outside and if a cable were to break in the upper loop then all steering inputs would stop. The cables you see outside go to a metering valve that will control the hydraulic fluid to the actuators when the tiller moves the cables.
During towing the steering pin is inserted in the towing lever and what you are doing is closing the shutoff valve on the metering valve to stop the hydraulic fluid from entering the actuators. This will prevent any damage to the aircraft and personnel when hyd power is applied. What you see in the first video is the result of the aircraft being towed and the tiller moving on its own. The steering bypass pin is inserted but even so when the tug turns, the actuators move and in return the cables do too. The second video you’ll see the pivot link turn which then controls the lower loop cables to the metering valve. This is the link that is connected to the steering link mechanism by the main battery. #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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The 787 <span class="emoji emoji1f60d"></span>what a magnificent looking aircraft <span class="emoji emoji1f44c"></span> #787 #b787 #dreamliner #boeing #boeinglovers ...
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The 787 what a magnificent looking aircraft #787 #b787 #dreamliner #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek The 787 😍what a magnificent looking aircraft 👌
#787 #b787 #dreamliner #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation ...
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#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
The reason for the two different types of cursor symbols is that one symbol is designated for the ...
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The reason for the two different types of cursor symbols is that one symbol is designated for the captain and the other one for the first officer. One thing to point out is that the captain’s cursor cannot jump across to the display units of the FO and vice versa. Another airplane you are able ... The reason for the two different types of cursor symbols is that one symbol is designated for the captain and the other one for the first officer. One thing to point out is that the captain’s cursor cannot jump across to the display units of the FO and vice versa. Another airplane you are able to see this feature is on the 787 and if you get the chance to tour the flight deck of these two planes, check out the displays units and take a look at the cursor symbol 😉 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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So why does the curser jump from corner to corner but not to the center? The reason why it can jump from corner to corner is because the touchpad on the cursor control device (CCD) has hot spots on each corner where at the center there is nothing. These hot spots allow you to quickly move up and ... So why does the curser jump from corner to corner but not to the center?
The reason why it can jump from corner to corner is because the touchpad on the cursor control device (CCD) has hot spots on each corner where at the center there is nothing. These hot spots allow you to quickly move up and down when you’re at the maintenance pages or doing a checklist as most options are on the top and bottom of the page. If you look at the video again, notice that at the beginning the cursor is at the center and by pressing the lower left corner the cursor jumps and when I move back to the center I have to lift my finger a few times. You will find that the touch pads on most planes will operate the same way😉 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation ...
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#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
Part 2 The fan blades on the GE90 are very reliable and durable. Each blade is about 4ft long and weighs ...
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Part 2 The fan blades on the GE90 are very reliable and durable. Each blade is about 4ft long and weighs nearly 50lbs and as I mentioned before, they are made of carbon fiber each side containing a few layers of protection: black paint, polyurethane coating and brown erosion coating (af32) ... Part 2
The fan blades on the GE90 are very reliable and durable. Each blade is about 4ft long and weighs nearly 50lbs and as I mentioned before, they are made of carbon fiber each side containing a few layers of protection: black paint, polyurethane coating and brown erosion coating (af32) on the back side of the blade. Most of the erosion will show on the pressure side or back side of the blade. The polyurethane coating may look scary for someone doing a walk around as it looks like hard plastic peeling off the blade and in some cases it can be severe. Once the polyurethane peels off you’ll see the brown coating and when the brown coating is gone you enter the no go area where the carbon fiber is exposed. Most damage is tolerable as long as it is cosmetic but it’s more strict when it concerns the structural integrity of the blade. You’ll be able to see such damage if you stand behind the engine looking fwd at the fan blades. Either way, if you do a walk around (pilot, ramper) and see this and have come concerns, notify maintenance for better inspection.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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Part 1 Before moving on to the fan blades, I’d like to add a little more info on the fan case. Some of ...
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Part 1 Before moving on to the fan blades, I’d like to add a little more info on the fan case. Some of the composite fan cases will have a hard outer shell while others will have a softer feeling case like in the video. Although the soft feeling case is composite, the outer layer contains an aramid ... Part 1
Before moving on to the fan blades, I’d like to add a little more info on the fan case. Some of the composite fan cases will have a hard outer shell while others will have a softer feeling case like in the video. Although the soft feeling case is composite, the outer layer contains an aramid woven fabric that will catch the blade and expand when it hits it. Think of it like a bullet proof vest. The vests also have woven aramid fabric (Kevlar) to help catch the bullet. With the all aluminum casing (outer shell) it’s purpose is to reflect the blade back and discharge it through the fan exhaust. With change in temperature, the gap between the fan blades and the abradable shroud changes in order to maximize the fan air efficiency. The smaller the gap between the blade and abradable shroud the less air escapes. The greater the gap more air escapes reducing the fan efficiency disrupting the airflow. If the blade does touch the abradable shroud the blade does not take any damage but in time the shroud will show wear. Checking fan blade clearance is critical and requires a trained mechanic to do it. If it’s your first time, the manual recommends you are trained by someone who has done it before. You cannot check blade clearance if you are in the intake (standing, sitting, laying down) and the temperature has to be controlled.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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So who would win, a fan blade or the fan case? It’s difficult to give a definite answer as I think it ...
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So who would win, a fan blade or the fan case? It’s difficult to give a definite answer as I think it depends on luck. The fan containment case is design to contain any break away blade(s) but we all know that doesn’t always happen. When a blade breaks away several things happen. The centrifugal ... So who would win, a fan blade or the fan case? It’s difficult to give a definite answer as I think it depends on luck. The fan containment case is design to contain any break away blade(s) but we all know that doesn’t always happen. When a blade breaks away several things happen. The centrifugal force will send the blade outward hitting the fan case and damage the surrounding fan blades causing some of them to also break. The blades that are still attached will be rotating until the engine is shut down. This will cause an imbalance on the engine causing it to vibrate violently. This may play a part on why sometimes the intake nacelle is missing and the fan cowls are ripped apart.
The GE90 fan case consist of an all aluminum casing (outside shell) with some composite material (inside) while its fan blades are of carbon fiber material with a titanium leading edge. The GEnx fan case and fan blades are of carbon fiber material. On other airplanes the fan case can be of similar design as mentioned above but with the typical titanium fan blades. If you see an engine open, you’ll be able to tell what material the fan case is made of. The assembly in which the fan containment case is located is called the fan stator. There you’ll find acoustic panels fwd and aft of the fan to reduce noise, the fan containment case, an abradable shroud below the fan blades, and the outlet guide vanes that direct the fan bypass air for thrust. If any of you have seen an engine up close, you may have notice a lot of small holes around the intake. Those holes are part of the acoustic panels and are there to reduce the noise the fan produces. Just remember, they are not for anti ice as I have already talked about that before.
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What is that hole and its purpose? The most popular answer I got from you guys was the oxygen blowout ...
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What is that hole and its purpose? The most popular answer I got from you guys was the oxygen blowout vent but that’s incorrect. That hole is a vent and it is part of the equipment cooling system (electrical system and avionics). This vent has two purposes: differential pressure cooling and ... What is that hole and its purpose?
The most popular answer I got from you guys was the oxygen blowout vent but that’s incorrect. That hole is a vent and it is part of the equipment cooling system (electrical system and avionics). This vent has two purposes: differential pressure cooling and smoke clearing. A valve called the override valve determines whether the cooling system is operating normal or an override exists. One thing to point out is that although the valve is one unit it’s a dual valve... valve as one shaft connects both. Only one valve is open at a time. In a normal operation air from the cabin is pulled through a filter by one fan (two installed only one works at a time). Almost next to the fans is the override valve and once the air passes the valve it is distributed to the electronic equipment. An override condition either both fans fail, smoke in the flight deck or electrical compartment, the valve by logic or by the pilot pressing a switch in the flight deck will close the cooling valve and open the smoke valve which will allow air to now be pulled through by pressure difference or “venting”. This will now cool and clear the smoke if any. Don’t confuse this hole with the similar looking vents for the waste tank in the back of the fuselage 😉remember that post? Oh, and you’ll be able to notice this vent on other Boeing airplanes as well 👍 #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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So what is the green line and what is it used for? This line is used for the horizontal stabilizer and ...
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So what is the green line and what is it used for? This line is used for the horizontal stabilizer and is called the green band. The green band tells the pilot where to position the horizontal stab for takeoff configuration. The green band is not fixed meaning it only stays in one position but ... So what is the green line and what is it used for? This line is used for the horizontal stabilizer and is called the green band. The green band tells the pilot where to position the horizontal stab for takeoff configuration. The green band is not fixed meaning it only stays in one position but rather it changes depending on the aircraft's weight and pilot data input. On top of the nose gear there is a pressure transducer that measures the pressure inside the nose gear strut and center of gravity of the airplane. If the forward section is heavy, the transducer will sense the added weight on the gear and send that information to several computers and vice versa. Once the pilot has also entered the airplane's weight and engine's thrust output into the flight management computer, several other computers then talk to each other to verify the information agrees. If the information entered does not agree with the press. transducer on the nose gear, the pilot will get a message. Here's extra info on the horizontal stab indications. The stabilizer moves a total of 15 degrees: 4 degrees up and 11 down where 4 is considered neutral. The tricky part is how the flight deck stab indications and degrees are read. For example, flight deck indicator unit is at 0 but the leading edge points a +4 degrees, flight deck indicator unit at 4 (neutral) but at 0 degrees leading edge, and flight deck indicator unit at 15 is at -11. #b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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 #a350 #airbus #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviation ...
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#a350 #airbus #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviation #megaplane #avgeek #a350 #airbus #airline #airport #instagramaviation #instaplane #instaaviation #plane #aviation #megaplane #avgeek
The safety features of a tire and wheel assembly are not many but are extremely important for us on ...
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The safety features of a tire and wheel assembly are not many but are extremely important for us on the ground. One of the features is a fusible plug which is meant to release the air from the tire in the event of high temperature. The way the fuse works is interesting. The center of the plug is made ... The safety features of a tire and wheel assembly are not many but are extremely important for us on the ground. One of the features is a fusible plug which is meant to release the air from the tire in the event of high temperature. The way the fuse works is interesting. The center of the plug is made of a different material that is designed to melt at a certain temperature. It is located somewhat inside of the wheel near the brakes. If the brakes get too hot, the center of the fuse plug will melt and immediately release the air. You will not find a fusible plug on the nose wheels since there are no brakes there. Another feature is an over inflation plug. If the mechanic over inflates the tire, rather than the tire exploding (which cases do exist) the disk inside the plug will burst and immediately release the pressure.
The next two items may not sound as important as the ones described before but they certainly help. Filling the tires with nitrogen retains pressure and temperature changes very well and no moisture is present. If you fill the tire with “normal” air such as with a compressor, the air temp inside can get way too high giving the tire a chance to expand and explode which will cause a lot more damage. Remember my previous post? Lastly are the vents on the tire sidewall. You will find many small holes and what they do is release any air that is trapped or finds its way inside the plys of the tire. It is hardly noticeable and not always venting.
If you do a leak test around the vent holes, you may be able to see bubbles but it’s normal unless you are losing a significant amount of pressure then the tire should be investigated.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #megaplane #aviation #avgeek
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For the many of you that haven’t encountered an aircraft tire blowout, consider yourselves lucky. ...
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For the many of you that haven’t encountered an aircraft tire blowout, consider yourselves lucky. During takeoff a tire blow out is very dangerous as the airplane may not be able to abort the take off in time and greater issues may pop up soon after being airborne. Example of two real situation ... For the many of you that haven’t encountered an aircraft tire blowout, consider yourselves lucky. During takeoff a tire blow out is very dangerous as the airplane may not be able to abort the take off in time and greater issues may pop up soon after being airborne. Example of two real situation both with a safe landing. ❶ Plane is on takeoff, complete tire tread separation which punctures a flight control surface, severs a hyd line and results in complete loss of one hyd system ❷ Plane is taking off, tire blows up and chunks of tire puncture the gear door and linkages.
The condition of the tire doesn’t always determine it will blow up or have tread separation as even newer tires are known to do that. The first thing that comes to mind in an situation like this is a retread tire. Retread tires despite having a “bad” reputation, they are actually very reliable and safe. Retreads are old tires that have had the treads and reinforcing plys repaired up to standards. They cost much less than new tires and nearly every airline buys them (you may also find the airline code stamped on the tire). Just by looking at the tires you cannot tell the difference. You will have to look at the sidewall. Depending on the manufacturer, the retread marking is different but all have the letter R. They are also required to have a location and date of the retread. The max I’ve seen the retread go is three times and if you don’t see anything, then that is a new tire and no retreading has been performed...yet. Also, due to the location of the tires, you will see that the fuel wing panels are impact resistant for this reason. We don’t need to make things worse by having fuel falling on what may be hot brakes. I haven’t experienced this type of situation as a passenger yet but I’m there cleaning up the mess 😪 #airline #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek
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A350 going through a scheduled engine change while our 777 is on a scheduled and easy going check. ...
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A350 going through a scheduled engine change while our 777 is on a scheduled and easy going check. #b777 #777 #boeing #boeinglovers #airline #a350 #airbus #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek A350 going through a scheduled engine change while our 777 is on a scheduled and easy going check.
#b777 #777 #boeing #boeinglovers #airline #a350 #airbus #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek
After gear retraction, why does the gear UP indication stay on for a while? When the pilot selects ...
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After gear retraction, why does the gear UP indication stay on for a while? When the pilot selects the gear handle up, the indication will become dashed. That indicates the gear is in transit. When the gear reaches its stopping point in the wheel well, you get the UP indication. As soon as that ... After gear retraction, why does the gear UP indication stay on for a while?
When the pilot selects the gear handle up, the indication will become dashed. That indicates the gear is in transit. When the gear reaches its stopping point in the wheel well, you get the UP indication. As soon as that happens, the signals go to the PSEUs (proximity sensor electronic unit) which it then talks to the HYDIM (hydraulic interface module) to relieve the hydraulic pressure from the landing gear system. Because of that your UP indication stays on for 10 seconds. If the UP indication stays ON, there is a problem and the gear will stay pressurized. Shoutout to @ge90man for some of the pics gotten in a flight sim. It’s difficult to get pilots to take a pic because it’s during a critical phase of flight and they cannot be distracted.
#b777 #777 #boeing #boeinglovers #airline #instagramaviation #instaplane #instaaviation #plane #aviaton #megaplane #aviation #avgeek
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