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Questions tagged [boeing]

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

20
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9answers
7k views

Why are aircraft parts built in different places and assembled in one?

Airbus has its manufacturing facilities in Spain, France, Great Britain and Germany. Each country produces different parts of the aircraft and is finally assembled in one place. Why is this? Wouldn't ...
2
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0answers
46 views

Difference between multi slats and three slats on B737 ? (leading edge devices)

What is the difference between multi slats and three slats on a B737 ?
16
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3answers
7k 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 wingtips. However, on closer inspection they're not - the ...
0
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1answer
135 views

Which 737 generations doesn't have Alpha Vane (Angle of Attack sensor)?

I was wondering if all generations have this angle of attack sensor, especially after recent 737 MAX Lion Air accident.
1
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2answers
92 views

What backup systems are in place for flaps actuated by sliding block guides?

Looking at this video of a 737's flap extension, it looks like there is just one screw per side driving all of the flaps. Are there any systems in place that will allow the flaps to extend in the ...
4
votes
1answer
299 views

Is there a significant difference between the jet blast from Airbus and Boeing?

I am looking up for jet blast data and there are not much information in the net. One of the main references I can found are the Airport Planning of each aircraft. From these can be obtained that the ...
1
vote
1answer
174 views

Which company manufactures the air data system on the Boeing 787-9 'Dreamliner'

I'm asking specifically about the manufacturer and model of the Pitot probes/tubes that provide the pilots with current air speed readings. Pretty sure it's either UTC or Honeywell but can't find ...
6
votes
1answer
456 views

What is this 'runway number' automatic readout system on a flight deck?

I was watching this flight-deck video (starts at 11:13) of a Turkish Airlines Boeing take off from Istanbul and just as they accelerate on the take off roll there seems to be an automatic voice in the ...
0
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0answers
109 views

What happened with the Boeing PETA Pulse Jet Engines

The boeing engines created a buzz when they were announced back in 2011, and were said to be proprietary technology. It created a buzz about easing VTOL concepts and more, but where does the project ...
1
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0answers
30 views

Is Function Item Number the same as part number but for components?

I found in the Airbus AMM in the Component Location section the acronym FIN (Function Item Number) and I wonder if it's Airbus way to refer to a part number that is not an expendable part (They use P/...
1
vote
0answers
77 views

Is it allowed / legal to produce a Type Rating CBT without the manufacturer's permission?

Pelesys, Navcon, Flyco, CPAT Global - just to name a few companies - all provide and sell various aircraft Computer Based Training Programs. Is it allowed / legal to program and sell products that ...
1
vote
1answer
177 views

Is the 737NG hydraulically controlled or electronically controlled?

I know that the 737NG is not fly-by-wire, but are the control surfaces controlled with hydraulic systems that transfer the input from the pilot to the control surfaces via fluid (hydraulics), or is ...
4
votes
1answer
199 views

What might the business model be for a hypersonic jet? [closed]

According to this video, NASA and Boeing are doing research into a new generation of hypersonic passenger planes that can travel at Mach 5. The designs look really cool and I would love to see them in ...
0
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2answers
240 views

Winglet design and airfoil selection

I'm currently in the process of designing a winglet for my low speed aircraft in xflr. While researching about winglets I read in a Boeing article that if the baseline outboard wing is relatively ...
5
votes
1answer
366 views

Are any Boeing 720s still flying?

A Boeing 720 looked like a 707 but was the size of a 737. I flew in one in 1961. I did not travel regularly until 1970 but I do not remember ever seeing a 720 again. Was it intended to have limited ...
2
votes
1answer
250 views

How does the V22 Osprey manage such high rotor speeds without shock waves?

I read somewhere that the engineers presented an ingenious solution to the rotor tip shockwave problem, except the article didn't actually explicitly mention it. So, does anybody actually know if ...
0
votes
1answer
684 views

Would the twin engine Boeing Y3 be able to compete better than the Airbus A380? [closed]

The low sales performance of the quad engine Airbus A380 and declining sales of the Boeing 747-800 have largely been attributed to lesser fuel economy of quad engine aircraft when compared to their ...
0
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0answers
62 views

Boeing 787-10 and 787-dreamliner [duplicate]

Why does the new 787-10 dreamliner have a lower range than that of 787-9 and 787-9 dreamliner?
0
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2answers
193 views

Delta fleet plans - all Airbus? (and Bombardier) [closed]

With Delta ordering A321neos and C-Series not 737 Max 10s, A339s, A359s instead of 789's, might Delta be on their way to an all-Airbus fleet? Or going away from Boeing? Was the 737 Max vs A321neo ...
0
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1answer
393 views

Why we had two empty rows on busy Ryanair flight Boeing 737-800 and no one was allowed to seat there? [closed]

Back in 2012 I flew from Tenerife South airport to London Stansted with Ryanair airline. All the tickets for this flight were sold out. But 3rd and 4th row on this Boeing 737-800 were empty (12 empty ...
6
votes
1answer
591 views

Why does Boeing use two different door-types (B757 hinge vs. B767 slide)?

Why did Boeing use a sliding door for the B767? And why wasn't it used in later Boeing planes? Edit: Looking up other airframe manufacturers I realised that the B767 was introduced prior to the B757....
8
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3answers
695 views

How could a twin aisle aircraft (Boeing NMA) ever have a single aisle (A321) economics?

I understand from this discussion about the Boeing 757 and 767 that drag is directly related to the front area of the airframe, hence flight efficiency of the dual aisle aircraft can only be ...
2
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0answers
211 views

What documentation do Airbus/Boeing supply at initial delivery of an aircraft?

What are the Aircraft Documents supplied by Boeing and/or Airbus at first delivery? Do they supply Form 8130 or Certificates of Compliance for every part? Or is the AIR/ARL all that is supplied?
5
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2answers
1k views

Why do Airbus aircraft typically have less wing flex than Boeing aircraft?

I was watching this video on YouTube about Boeing vs Airbus aircraft, and at around the 5:09 mark the female pilot stated that Airbus wings are much "stiffer" and "less aerodynamic" compared to Boeing'...
12
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4answers
887 views

Do Boeing and Airbus learn from each other?

Air France Flight 447 crashed into the Atlantic Ocean in June 2009. It was later revealed that the FO was unwittingly pulling the sidestick back, stalling the aircraft. The aircraft was an Airbus 330. ...
2
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1answer
350 views
3
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1answer
647 views

What is the purpose of the little eyebrow windows on the Boeing 737? [duplicate]

Anybody know what these windows were used for?
3
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1answer
252 views

Which avionics suite does the 757 use?

I am wondering who makes the 757 avionics? Is there a glass cockpit upgrade? What is the name of the avionics suite? Thanks in advance
5
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1answer
162 views

Did Boeing subcontract the manufacturing of the wings on the B757 series?

If Boeing did subcontract, which company took over the manufacturing of the wings? Where were the wings made?
4
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1answer
665 views

What is a Virtual Window in an aircraft?

I heard about Virtual Windows in the Dubai show, but I didn't really got it. What is it? In a demo, when they opened the shields, I could just see the ground handling before taxing. Search engines ...
2
votes
1answer
261 views

How many hydraulic systems does the Boeing 757 series have?

How many hydraulic systems does the B757 series have, does it have a Power Transfer Unit (PTU)? What is the operating pressure of the hydraulics in the Boeing 757? How big is the hydraulic reservoir?...
4
votes
2answers
764 views

How can I find out how much a passenger window of a Boeing 737 costs?

Where do I have to look to find out how much a passenger window of a Boeing 737 costs?
1
vote
1answer
264 views

Where can I find United 757 Checklists? (CRM, Pre Start, Pre Takeoff)

Where can I find United 757 Checklists (CRM, Pre-Start, Pre-Takeoff)? I need these for a writing project that I am doing. Any help is greatly appreciated. Thanks in advance! Thanks, Charlie :)
1
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2answers
3k views

What are service letters and service bulletins?

How do a service letter and service bulletin differ.
9
votes
1answer
709 views

What to do when pneumatic air cycle kit stops working mid-flight on Boeing 737-800?

If you are flying a B738 at FL390, and one PACK (pneumatic air cycle kit) becomes inoperable, do you have to descend to FL250? If so, do you need to divert for fuel?
14
votes
1answer
2k views

How does envelope protection work in Airbus vs. Boeing aircraft?

I keep reading this thing that "On Airbus the computer overrules the pilot, not on Boeing". Smells like urban myth or at least gross oversimplification. How does envelope protection work differently ...
0
votes
1answer
298 views

How the antenna on the B737 Max fuselage doesn't disrupt the airflow? [duplicate]

As the title already say, how does the antenna on the Boeing 737 Max fuselage not disrupt the airflow? (Boeing) 737 MAX antenna.
11
votes
5answers
6k views

Is it possible to upgrade a Boeing 747-8 and Airbus A380's engines for greater speed?

Is it possible to upgrade the Boeing 747-8 and Airbus A380's engines (upgrading to a newer engines) for greater speed, if the engines were more efficient and used less fuel at higher speeds relative ...
38
votes
2answers
6k views

What are these five indicators at the front of the 737 passenger cabin?

As a passenger I noticed set of five indicators on ceiling at the front of the 737 passenger cabin. They are: red, yellow (or white), blue, white, red. Red ones seem to be coupled together (what ...
10
votes
1answer
2k views

What happened to the Boeing Y3 aircraft?

What happened to the Boeing Y3 aircraft? Did they ever produce a fully functional prototype? What is the likelihood that it will ever be produced, and when will they start production?
1
vote
1answer
81 views

Is the modelname of a flight management system chosen in accordance with the aircraft it will be used on?

I am looking for information about what modules (not necessarly partnumbers) are used in a flight management system of a relatively new airplane. After having looked around for quite some time, I ...
3
votes
1answer
1k views

Why are 737 fuselages built in Kansas?

737 fuselages are built in Wichita Kansas and are transported by train to Renton, Washington, where the plane is assembled. Why outsource the fuselage all the way to Kansas? The cost of moving the ...
7
votes
2answers
3k views

What is the difference between a Boeing Line number and a Block number?

We know that every Boeing aircraft has a Line number, Block number, and MSN number. I want to know what what does it mean by this Line Number or Block number. and what are the difference among these ...
11
votes
5answers
3k views

Why was the Boeing 377 “Stratocruiser” frequently landed nosewheel first on touchdown?

Why was the Boeing 377 "Stratocruiser" frequently landed nosewheel first on touchdown? In the mid-1950's I had often observed Northwest Airlines' B377's frequently being landed that way at the old ...
6
votes
2answers
977 views

Do airliners like Boeing and Airbus use airfoil variation along the span for their wings?

Airfoil variation will make a significant difference in airflow over the wing, thus proper variation according to the lift profile should improve the overall aerodynamic performance. But by how much? ...
4
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2answers
421 views

How can you identify an Airbus and or Boeing from the inside based on features of the interior?

I already asked a very similar question, but the answer wasn't was I was expecting. Hence this time I am more specific. How can you recognize a plane from the inside, when you are already sitting as ...
9
votes
1answer
1k views

What are these spinning discs next to the throttle of the Boeing P-8 Poseidon?

The source video can be found here and the GIF is from 0:21 onwards. What are those 2 spinning things next to the throttle ?
11
votes
2answers
2k views

If all engines fail in a Boeing, how heavy are the flight controls?

Consider a large airliner with no Fly-By-Wire controls, such as a Boeing 747 or 767. All the engines have failed, the Ram Air Turbine is deployed, and the plane is gliding. How heavy are the flight ...
18
votes
2answers
5k views

Why did the first Boeing B17 test flight crash on takeoff?

Wikipedia says that the control surfaces were locked. What does this mean, and if the control surfaces cannot be moved, how did the aircraft get into the air in the first place?
3
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1answer
450 views

What are the “high performance characteristics” of a Boeing 777?

News of the potential further stretch of the A350-1000 have seen pretty much all journalists discuss the "high performance characteristics" of the competing Boeing 777-9 with Middle Eastern airlines. ...