Questions tagged [boeing-777]

A long-range wide-body twinjet airliner produced by Boeing since 1993, with over 1,500 built.

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32
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2answers
5k views

MH370 blackbox - is it still possible to retrieve data from it?

If the blackbox of MH370 were to be found today, would it actually still provide any information, assuming that it was in 5km deep water or so for some 5 years now? If not, why would you still be ...
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2answers
241 views

B777- In emergency mechanical back up how does the flight controls manage engine failure

In case of engine failure above the ocean with multiple electrical failures and after having exhausted the batteries the fly by wire mechanical backup with available hydraulics if left with the THS ...
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1answer
450 views

Why didn't Boeing make the Sky Interior for the Boeing 777?

Generally, Boeing has attempted to make the interiors of their aircraft as similar as possible, with one "unified" interior across different aircraft (i.e. based on a single "look and feel" for you UX ...
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3answers
108 views

How to apply the TO/GA time and EGT limits?

If there is a published 1) EGT limit and a 2) TO/GA time limit, which one should be applied when the EGT is well below the EGT limit and possibly even below the 'max continuous' EGT. Particularly with ...
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2answers
138 views

How long are the nacelle strakes on a GE-90?

For my school project, I'm doing something where I create a nacelle strake on a model plane and I want to make it to scale. Could you please let me know the dimensions of a nacelle strake? I would ...
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0answers
110 views

Can 7 AKE containers adjacent to each other be securely locked in a 777-300ER's aft cargo bin?

Is it possible to securely lock 7 AKE (LD3) containers adjacent to each other in a Boeing 777-300ER's aft cargo bin from position 31 to 41 (41 included)? According to my experience it's impossible to ...
2
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1answer
579 views

Why was Air India flight AI101 diverted to SHJ 5 times in the past few days?

Air India flight AI101 using a 777-300ER on multiple westbound and eastbound routes was diverted to SHJ airport in Sharjah, UAE. I am curious if there is a specific reason. It cannot be a coincidence ...
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2answers
313 views

Is Saudia's 777-368ER The Longest Passenger Aircraft?

I watched this video about passenger aircraft length. It says the longest passenger aircraft is Saudia's 777-368ER. Saudia web site says their 777-368ER is 78.86m. ...
5
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3answers
659 views

Can a 777X legally be ferried with one or both wingtips folded?

The 777X family (777-8/-9/-10) features wingtips that fold up on the ground to let the aircraft fit in tight spaces. These have to be extended and locked in place before a revenue flight can take ...
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1answer
574 views

How much air does a 777-300ER's pressure cabin hold?

I've been wondering how much air a 777-300ER's pressurised cabin holds, but, while most of its specifications are fairly easy to find, the amount of air it contains is not. Does anyone know what ...
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1answer
134 views

Difference between FMCF and AIMS on B777?

What is the Difference between Flight Management Computing Function and Airplane Information Management System on B777?
21
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3answers
8k views

Why has the 777x been designed with folding wingtips?

I recently visited the Boeing factory outside Seattle, WA and noted in the distance a new 777x being built with, what looked like very large winglets. However, on closer inspection they're not - the ...
0
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1answer
346 views

Can the pilot stop airflow between cockpit and cabin?

During normal operation the entire fuselage is pressurized equally: An aircraft fuselage does not contain separate compartments with different pressure values in each. The entire vessel is ...
7
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2answers
615 views

Can autothrottle be used without autopilot (and vice versa)?

In commercial passenger aircraft: Can autothrust be used with A/P disabled ? And can A/P be used without using autothrust? Citable references very welcome! If the question depends on a specific ...
0
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1answer
286 views

Wind correction on downwind during circling

A timing must be started when flying abeam the threshold on a circling approach. The FCTM of the B777/787 mentions 35 seconds and the SOPs of the Embraer 190 30 seconds. Do they need to be corrected ...
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1answer
377 views

What are the Boeing 777 thrust calculations? [closed]

Can someone show typical calculations for a Boeing 777 jet engine for the following criteria: Take off thrust of the engine at 170 mph take off speed and 45 degrees F Cruising thrust required at 500 ...
13
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2answers
3k views

How does the Boeing 777's yoke of both the captain and the first officer have synchronized movement?

On Airbus planes, the side stick of both the captain and co-pilot are not synchronized in movement, meaning if you the captain moves the side stick, the co-pilot's side stick will not move together. ...
7
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1answer
2k views

How often is a tire replaced on a 777?

Given that it is long haul aircraft, and is most widely used by airlines in that capacity: How often do they replace the whole tire? How much does 1 tire cost the airline?
7
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1answer
746 views

What does “share a type rating” mean?

The Boeing 787 shares its type rating with the 777, but what exactly does that imply? Surely it cannot mean any 777 pilot can just jump into a 787 and fly it. While being similar, the 787 has some ...
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4answers
785 views

What was the value proposition of the 767-400ER over the 777?

Aside from visible differences, what are some differences in the usage and design of the 767-400ER as compared to the 777-200/200ER (or 300/ER if you feel makes more sense)? What was the value ...
4
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1answer
626 views

What repair can be done on this wingtip? (777)

The accident happened in August 2012 and broke the wing of the Boeing 777-200 passenger jet. While taxiing at Shanghai's Pudong airport, its wingtip hit the tail of another aircraft. What action need ...
2
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1answer
170 views

Why does the B777-200 freighter not use the letters I, N, O and Q for deck positions?

The B777-200 Freighter has positions on the main deck to describe how the cargo will be loaded in a left to right sequence. They are identified as A, B, C, D, E, F, G, H, J, K, L, M, P and R. What is ...
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0answers
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Is the Embraer E190-E2 equipped with raked wingtips?

It looks like the Embraer E190-E2 has a raked wingtip, but isn't a raked wingtip only efficient for long-haul aircraft like the Boeing 77W?
5
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1answer
2k views

Why is Landing Altitude displayed in amber on B777?

When I set the landing altitude manually, an amber LDG ALT and Landing Altitude EICAS message is displayed. There are no failures nor has the landing altitude been set incorrectly. Why do I still ...
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2answers
6k views

Why do the wing tips on the Boeing 777X fold up instead of down?

The outer 11.4 feet (3.8 meters) of the wings of the Boeing 777X are designed to fold up when on the ground. Why aren't they designed to fold down? It seems to me that folding down would be more "...
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3answers
6k views

Why does the Boeing 787 have fewer cockpit windows?

Why does the Boeing 787 have fewer cockpit windows? The 787 has only 4 cockpit windows, whereas other airplanes have 6. Here is a comparison between the 787 and 777: ^ 787 V.S. 777 v
5
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1answer
941 views

How do tyre pressure sensors in aircraft work?

I am specifically interested in the sensors used on B777 and B787.
7
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2answers
2k views

How long is the training to get a Boeing 777 rating if one has a 737-200 rating?

I was wondering if anyone knows how long the training for a 777 takes if one already holds a 737-200 rating. I've looked it up online and didn't find an adequate answer. According to this site, the ...
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3answers
5k views

How does the nitrogen generation system in a Boeing 777 work?

How does the nitrogen generation system in a B777 work and how does it differ from that used in a B787? Any diagrams will be appreciated.
5
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1answer
1k views

How does the wheel speed sensor in a Boeing 777-300ER work?

I do have a maintenance manual that I found on Internet, but it doesn't have anything about the wheel speed transducer. Any pics along with the information would be helpful.
14
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1answer
5k views

Why did Boeing remove the engine chevrons on the 777-X?

From the most recent renderings on Boeing's site, it looks like the engine chevrons found on the 787, 747-8 and 737-Max have been removed from the 777-X. Is there a good reason for this?
2
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1answer
377 views

Where is the toilet smoke detection indication displayed for a B777-200/300?

In case of smoke detected in any of aft toilet of a B777-200/300, where is the indication displayed? Is this at a single location, or at different locations?
7
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2answers
880 views

Could an aircraft like a Boeing 777 take off with flaps fully deployed?

I have wondered this for years. Could an aircraft successfully take off with the flaps fully extended to the landing position? To make this more concrete, let's say a B773-ER at ATL runway 8R.
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2answers
2k views

What's an estimate for the cost of the cockpit technology on a 747 or 777?

Can anyone share what the percentage cost or dollar costs of cockpit instruments and related software is within a 747 or 777? PS- I'm a physician working in medical safety. Physicians can no longer ...
0
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1answer
2k views

What is the CPIOM in the IMA?

What is the CPIOM in the IMA architecture. Which is the difference between the CPIOM in the A380 and the CPIOM in the B777?
7
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1answer
477 views

Can you safely operate a 777 with diesel?

Is it possible to safely operate a Boeing 777 on diesel instead of Jet-A? Are there any regulations that prevent this? Would it cause any damage?
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2answers
3k views

Can passenger plane do an aileron roll and fly upside down? [duplicate]

I've researched this topic and as far as I can tell any plane can fly upside down if it's already in this position. It just needs to be angled enough so that its wings are angled upwards. I believe ...
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2answers
3k views

What is the flap extension schedule on approach for an airliner?

I understand that there are probably no set altitudes and speeds for flaps extensions, but can someone with insight provide a general guide for speeds, altitude and flaps for an ILS approach in good ...
64
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2answers
15k views

How was I able to just plug in my headphones and listen to ATC and pilot chatter?

I was travelling from Mumbai to Newark Liberty Intl on United Airlines 49, a Boeing 777-200. I was sitting in the economy section, last row, last seat to the plane's left, basically, I was literally ...
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3answers
7k views

Where can I find Boeing 777 safety records?

I have booked flights for our family to travel Australia - Europe return with EK. My nine year old son is an aviation geek and since learning some details of the EK B777 crash in DXB (and also the OZ ...
6
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3answers
5k views

How do pilots adjust trim on the B777, where the control forces are simulated?

I know that pilots of small airplanes (e.g. Cessna 172) use force to trim, i.e. they hold the required attitude using the yoke, then trim the aircraft until no force is required to hold the yoke in ...
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1answer
1k views

777 small wing panel moving all the time during landing [duplicate]

What is the small wing panel called that moves up and down all the time during landing? See the following video: What purpose does it serve?
10
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2answers
1k views

Which aircraft type flies the most annual passenger-miles?

Which aircraft type flies the most annual passenger-miles? I understand there are over 4,000 737s in service. However, there are over 1,300 777s in service. These each carry more passengers, and ...
7
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1answer
615 views

How much do the fan blades of a GE90-115b stretch when the engine is spinning at maximum RPM?

I've always wondered what kind of stresses and resulting deformations jet engines are subjected to when running.
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3answers
3k views

What is the difference between Boeing 777 aircraft engines and Apollo rocket engines?

What is the difference between Boeing 777 aircraft engines & Apollo rocket engines. Do these two types of engine work the same way?
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3answers
3k views

Could winds of up to 150 km/h impact the structural loads on a Boeing 777?

From 15 October 2016, AI 173 from Delhi to San Francisco started flying over Pacific. Jet streams over Pacific helped Air India in reducing the flight time by 2 hours, despite increasing the travel ...
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1answer
900 views

Which is the difference between IMA (B777) and Open IMA (A380)?

The integrated modular avionics concept (IMA) was developed by Boeing for its B777. Open IMA is an improved version developed by Airbus starting from A380. Which are the differences? For example, I ...
11
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1answer
2k views

Why select the transponder to TA only in the case of engine failure?

Part of the 777 engine failure checklist is to set the transponder to TA only. What is the purpose of this step?
12
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2answers
23k views

Why does the B777 have no winglets? Are there any drawbacks to having winglets?

I have googled and noticed that almost every Boeing 777 is not equipped with winglets. Does anybody know the reasons why Boeing did not equip B777s with winglets? Are there any drawbacks to having ...
6
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1answer
4k views

What mode is the Boeing 777's autothrottle in right after touch down?

This question came to my mind when I saw the Emirates B773 (Dubai on Aug 3rd 2016) accident. I saw a couple of 777 cockpit videos and I saw that autothrottle (A/T) is widely used during landing and ...