Airbus vs Boeing Fly-by-Wire

The cluster centers on debates about fly-by-wire flight control systems in Airbus and Boeing aircraft, contrasting Airbus's protective computer interventions with Boeing's direct pilot control, often referencing crashes like Air France 447 and flight laws.

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Sample Comments

yutyut Jul 14, 2019 View on HN

>needs software to regulate it itThis is a standard pattern on most modern aircraft. Control is abstracted away by some computers, however—and as you said—the pilot can override the computers to more directly interact with the aircraft’s flight controls. Not an odd principle at all.

wereHamster Mar 10, 2019 View on HN

Wait until you learn about how the fly-by-wire system on Airbus works ;)

tropo Feb 8, 2017 View on HN

Nope, it wouldn't happen in a Boeing aircraft. This is a well-known Airbus defect that was a contributing factor to the crash of Air France Flight 447.Boeing uses traditional controls. It's like a race car steering wheel on a big movable stick. It is really easy to see how the control is positioned.Airbus uses a small joystick off to the side. It is force-based like a Thinkpad pointing stick, so it barely moves when you push on it. It isn't easy to see if the device is being

justsid Apr 27, 2016 View on HN

Every Airbus since the A320 uses the same system in their fly by wire design as well. Plus several fallback mechanisms where other computers can take over failed computers work or augument their work. For example the ELAC controls the ailerons and the SEC controls the spoilers, if the ELAC fails the SEC can take over and provide roll control via the spoilers, although limited (and those changes also come with a change of the planes flight envelope)

fvdessen Feb 3, 2019 View on HN

IIRC, in Airbus planes the pilot has no direct control. He gives inputs which are then accepted or rejected depending on what the computer thinks is safe; at take off you can pull the stick as much as you want, the computer will not let the tail hit the ground. In Boeing you have direct control but with better feedback on what’s going to happen.

doikor Feb 11, 2020 View on HN

How is this any different from current Airbus planes? They are all fly by wire. If you turn off the computer in them you will lose all control. This is why they have a bunch of redundancy built in.

xattt Aug 27, 2025 View on HN

Fly-by-wire aircraft have changeable “flight laws” that correspond to different levels of computer intervention to mitigate situations incompatible with controlled flight.Think of it as various stability control modes in a modern car. Likely the aircraft needed to be put in the least restrictive flight law mode as a workaround.

AretNCarlsen Sep 15, 2011 View on HN

Yes, and "if Captain Sully had been flying an Airbus he would have crashed because they don't allow manual control". The objective is to reduce the total number of crashes, even if that means that you feel like you have less control of when you do crash.

crummy Mar 14, 2019 View on HN

Doesn't that describe fly by wire systems which describes most planes these days?

Have an up vote for logic!Airbus had a crash because their fly by wire averaged the input from both yokes vs doing what Boeing does which is to allow both to feel that the other is pushing on the yoke and the pilots where not trained to understand that.