Questions tagged [boeing]

A United States-based multinational corporation that designs, manufactures and sells fixed-wing aircraft, rotorcraft, rockets and satellites.

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What aerodynamic improvements were introduced on the Boeing 787?

When discussing the Boeing 787, three topics are brought up most often: 1) The new, extremely high-bypass GEnx engines 2) The shift to carbon composite construction and 3) The significant troubles ...
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7 votes
1 answer
196 views

Can air traffic control see control panel selections (I.e. FCU on A320 or MCP on B737)?

I have flown with a few captains that have told me that air traffic control can see the settings we set on the FCU (or MCP on B737): Is this actually correct? I'm aware that ATC can see what speed, ...
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3 votes
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Comparisons between the A340 and 747-200 wing: sweep angle and span

Here is a picture of the wings of the A340 (launched in the late 1980s) and the Boeing 747-200/400 (launched in the early 1970s / 80s) superimposed upon each other (source: https://www.amazon.com/...
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0 votes
2 answers
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What’s the horizontal and vertical tail airfoil and volume of 747-400? [closed]

What’s the horizontal tail volume coefficient of 747-400? What’s the vertical tail volume coefficient of 747-400? What’s the horizontal tail airfoil of 747-400? What’s the vertical tail airfoil of 747-...
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1 vote
3 answers
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How has Computational Fluid Dynamics improved commercial airliner wing design?

Starting the 1980s, extremely powerful computational fluid dynamics software has been used to design wing sections and whole wings. I am going to focus on the Boeing 777 as an example of CFD applied ...
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9 votes
2 answers
3k views

How have engineers managed to increase commercial airliner wing aspect ratios over time?

Over time, the wing aspect ratios of commercial airliners have increased. For evidence ,see the following data: 1980s: Boeing 747-400: 7.91, Boeing 757-200: 8.0 Boeing 767-300: 8.0 Airbus A310: 8.8 ...
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4 votes
1 answer
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How did the 767/757 reduce fuel burn relative to older aircraft (like the 727)?

When Boeing launched the 757 and 767 aircraft, they widely touted it's improved fuel efficiency relative to previous airliners. Notably: Delta stated that the 767 was "quieter and 30 percent ...
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2 votes
0 answers
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Could anyone provide me with the performance charts for Boeing KC-135R Stratotanker?

I am looking for the Long Range Cruise Maximum Operating Altitude performance against the weight of the plane, all engines operating. Would be grateful if someone could point me the way.
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1 vote
0 answers
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Do the B777x and similar aircraft use ring laser gyros or solid state MEMS gyros?

In new generation aircraft like B777x , B787 or A350 use the IRS system which is present is it based on (Ring Laser or Fibre Optics) gyros or they used Solid state MEMS like which our present in our ...
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-1 votes
1 answer
172 views

Why didn't ejection seats become a thing in civil avation and only limited to military? [duplicate]

Recently, an Indian CDS Bipin Rawat and his family as well as eleven members of the Indian Army died in an helicopter crash. You can find the story here. I did look at any questions asked on the topic ...
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Does aircraft manufacturers provide option to exchange older models?

Most of the vehicle manufacturers provide exchange value for older models when buying a newer one. Like you can exchange your old BMW 3 Series for new 3 Series or upgrade to 5 Series and so on. Is ...
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13 votes
1 answer
1k views

What is that little black thing tied to the vertical stabilizer? [duplicate]

I have seen this on all Boeing test planes, does this provide information on the planes performance?
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0 votes
1 answer
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Why doesn't Boeing use supercritical airfoils?

It's my first question & I really want to know the answer from professionals to decide if my new design of airfoil is worth it because the initial test by CFD software (Fluent-ANSYS) indicate that ...
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3 votes
1 answer
591 views

Does Boeing use a similar display to Airbus ECAM to view a particular system?

Airbus has a dedicated ECAM panel forward of the throttles which is used to select a system for display on the LCD. Is there a similar panel used to select a particular system for display on Boeing's ...
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0 votes
0 answers
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Is it possible to continue flying without electric power? [duplicate]

To be specific with the question, I would like to know if if it is possible to continue flying in the event of total loss of electrical power. Obviously, I know this entails the shutting down of ...
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How heavy are the folding wingtips of 777x?

To understand the mass penalty that is induced by a folding wingtips, as a first order approximation we can start with just the wingtip's mass without the actuating mechanism. I could not find the ...
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6 votes
1 answer
289 views

Why does Boeing 247D have reverse slope windows when they were removed from the D models?

Have a look at this article on a famed example of the 247D, DZ203, the first aircraft to make a completely blind landing. The first image is the aircraft during its flights with the RAF, which places ...
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1 vote
1 answer
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Does Airbus buy Boeings and vice versa?

I read somewhere that Airbus developed the A350 in response to the B787. In general, how much do Boeing and Airbus know about each other's aircraft? And how do they learn about the detailed designs of ...
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7 votes
5 answers
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Why did Boeing not create a new 737 instead of just upgrading the old model?

This documentary claims that James McNerney - Boeing's first CEO without a background in aviation, made the decision to upgrade the 737 series to 737 MAX instead of developing a new model. Is this ...
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1 vote
1 answer
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Is there any difference between Airbus and Boeing on yaw damper technology?

Modern aircraft have yaw damper systems installed. Is there any difference between the two big manufacturers on yaw damper systems, such as the location, etc.? I have to do some research on this topic ...
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2 votes
2 answers
936 views

How does one resume a VNAV climb in a B737 NG after being instructed to level off at an altitude below the Cruise altitude?

I am referring to a Boeing 737NG. Assuming I am on a VNAV climb but I am instructed by ATC to climb only to an altitude lower than my FMC Cruise altitude. After leveling off, how do I resume my VNAV ...
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0 votes
1 answer
483 views

How does the B777 Side brace locking mechanism work?

The B767 has jury strut actuators and their working is pretty straight forward. They oppose the collapsible geometry of jury strut and lock them in the over centre locking position. But for B777 this ...
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0 votes
1 answer
566 views

Why is the ISOLATION VAVLE switched to OPEN during ENGINE START on Boeing 737?

As the SOP says in Preflight Procedure – First Officer: "ISOLATION VALVE switch – OPEN" In this way, when engine starts, the ISOLATION VALVE is OPEN not AUTO. The PACK valve is switched to ...
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2 votes
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What does "running torque" mean?

I would like to know the meaning of the phrase and especially the meaning of "running torque": Torque the inner plug to between 75 and 85lbf.in. Loosen half a turn and RETORQUE to between 15 and ...
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1 vote
1 answer
416 views

How do Airbus and Boeing aircraft handle Dutch roll?

I have some homework about Dutch roll filters. Dutch roll is something that is corrected by yaw damper systems, but I would like to know the different ways Boeing and Airbus deal with the issue of ...
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17 votes
1 answer
876 views

Why aren't 757 scimitar winglets flush with the ailerons?

Over my many past flights aboard 757s, I have seen changes being implemented with their design. One of which was notably their refit of scimitar winglets. Although one of their most notable ...
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2 votes
1 answer
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What is this long Bar/Rod on the Boeing MH-47G? [duplicate]

This MH-47G has a thick, long rod at the bottom left front. What's the purpose of this thing?
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1 answer
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Why did the 747-8's freighter version make its first flight before the passenger version?

I have read that the 747-8F entered service in October 2011, almost eight months ahead of the passenger version (747-8I). Anyone know why this is? Thanks
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5 votes
5 answers
555 views

Can a company be both an airplane manufacturer and an airline?

It may be advantageous for a company that manufactures its own aircraft to also be an airline. For example, the airline business would likely have reduced maintenance and parts costs relative to other ...
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1 vote
2 answers
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Is the 777X actually the newest Boeing plane?

I don't think the 777X is actually the newest Boeing plane (in april 2020), since it's only a new variant of a previous Boeing plane. So the actual newest plane would belong to the 787, since it's the ...
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23 votes
1 answer
15k views

What does "Boeing" mean?

We know about the existence of Boeing planes like the 737, 747, and other planes. But where did the name "Boeing" come from?
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17 votes
3 answers
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Why didn’t Boeing ramp 737NG production back up in response to the 737 MAX groundings?

The predecessor of the currently-grounded 737 MAX is the 737 Next Generation (737NG), produced from 1997 through 2019. The NG family (comprising the 737-600, -700, -800, and -900) is extremely ...
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Is it easy for a Boeing 747 pilot to get a second typerating on the 777? [duplicate]

Is this easy and responsible? Since the 747 and 777 have a glass cockpit, you would think this would be easy.
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6 votes
1 answer
687 views

What changes were made to the 777 as a result of British Airways 38?

Regarding the crash of British Airways Flight 38, a 777 inbound to Heathrow, the AAIB final report, section 2.8 states that frozen fuel deprived the engines of fuel pressure resulting in the crash. ...
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14 votes
2 answers
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Did Boeing really use ferrets to run wires through aircraft during construction?

I've seen many articles on the internet (here, here & here) claiming that Boeing used a team of ferrets to run cables through hard to reach areas when building aeroplanes, but I've never seen any ...
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1 vote
0 answers
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Do winglets really improve efficiency and reduce drag? [duplicate]

Below are some pictures of various fixed wing aircraft with winglets. It is widely accepted that these winglets will improve an airplane's performance by reducing drag and therefore improving fuel ...
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5 votes
1 answer
709 views

Why do Boeing planes have more flap settings than Airbus planes? [duplicate]

The Boeing 737 and Airbus A320 are similar in size and performance. They are direct competitors. Boeing seems to have eight flap settings (1, 2, 5, 10, 15, 25, 30, 40) whereas Airbus seems to have ...
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8 votes
1 answer
754 views

Does the pilot still have final control authority on modern Boeing airplanes?

In this answer it is said that Boeing (contrary to Airbus) gives final authority to pilots, but the example is about a 747-100(SP). This answer states, that modern Boeings have have a lot of fly-by-...
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10 votes
1 answer
491 views

Which commercial aircraft can fly Micro-SLOP procedures?

"Strategic Lateral Offset Procedures (SLOP) are approved procedures that allow aircraft to fly on a parallel track to the right of the centre line relative to the direction of flight to mitigate ...
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-3 votes
1 answer
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What is the aircraft type in the movie 'Once Upon a Time in Hollywood'

The new movie Once Upon a Time... In Hollywood has a few scenes in a Pan American Airways aircraft. The movie is set in the late 60s, looking at their fleet from that time, it looks like it was either ...
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36 votes
2 answers
7k views

Why was this commercial jet accompanied by small plane near Seattle?

From the South Beach Campground on the western shore of the Olympic Peninsula in Washington State we observed this unusual formation: I only had a Sony RX100 at hand but perhaps the image quality is ...
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1 vote
2 answers
1k views

Which aircraft are 76A, 76B, 77E, 77F?

I have a list of of aircraft types like so: ...
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1 vote
0 answers
114 views

Object on the flaps? [duplicate]

I was on a intercontinental flight to the US and noticed this object shaking with the wind and moving as the flaps change position. Is this normal? I have never seen this before. Is it safe to travel ...
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Why did Boeing keep using yokes while Airbus moved on to sidestick?

The first Airbus had yokes but they changed to the sidesticks after a while But Boeing is still stuck with yokes even with 777-300ER decades later. The sole purpose of the yokes are seemingly for the ...
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0 votes
1 answer
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Is there an easy way to determine where a part goes on an airplane?

In order to classify parts for export I need to determine where our parts go on the plane. (Engine or structural/body) Specifically looking at the canister, heat shield assy and lock support for the ...
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0 votes
0 answers
1k views

Where do I get the latest 737NG FCOM?

So, I went online to search for the 737 FCOM, but I can only get the FCOM from 2005. Is there a 2019 version? An updated version?
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1 vote
1 answer
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B767 antenna identification

Can anyone identify which comms/nav system the circled antenna belongs to? Thanks.
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0 votes
1 answer
410 views

Are there surveillance cameras in aircraft cargo bays?

I've heard that there are cameras on the fuselage and wings of some passenger aircraft. Is there a similar surveillance system in-built at the cargo bay/compartment of a passenger aircraft? During ...
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2 votes
2 answers
513 views

How to become pilot in India with lack of money

Hello I am from India currently I am in class 12 pursuing PCM and want to become a commercial pilot but belong to a middle class family how can I pursue my dream. I can't afford course of 60 - 80lacs.
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-9 votes
1 answer
259 views

What can I do if my aircraft type changes last minute? [closed]

I have a flight scheduled for June with a popular, European commercial budget-operator on a 737. I'm sure everyone knows about the groundings of the MAX. However, I'm concerned that the MAX may be ...
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