How many easter eggs will emerge from Boeing. In last 2 months, we had similar incidents from Boeing where an undocumented software safety kicked in and causing trouble for everyone
brutal comment.
Boeing 787 Suffers Rare Dual Engine Failure on Landing
11–20 of 365 posts
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#12Sort of off topic, but reverse thrust sort of boggles my mind. If you're sucking air in from the front of the aircraft and ejecting it out the front, don't those forces counterbalance each other?
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#13I'm not sure this is a bug. It sounds like pilot-error to me (I am not a pilot): "In the bulletin, Boeing said that selecting full reverse too quickly upon landing before the aircraft has fully transitioned to ground mode could cause the system to activate."
Depends if "too quickly" means "clearly dangerous, so the system prevents a risk, and it's clearly the safer thing to do" or "fast enough to trigger the bug"? And even if it is the former, presumably it should be signaled and restart possible afterwards.
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#14"Boeing said that selecting full reverse too quickly upon landing before the aircraft has fully transitioned to ground mode could cause the system to activate." That sounds like apple's "you are holding it wrong" when "antenagate" happened. Not something I want to hear from an aircraft company where people's lives depend on it working.
Going off your quote it just looks like they're describing the symptom?
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#15I'm not sure this is a bug. It sounds like pilot-error to me (I am not a pilot): "In the bulletin, Boeing said that selecting full reverse too quickly upon landing before the aircraft has fully transitioned to ground mode could cause the system to activate."
There should be manual override. What if this happened in-AIR?
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#16How many easter eggs will emerge from Boeing. In last 2 months, we had similar incidents from Boeing where an undocumented software safety kicked in and causing trouble for everyone
Probably more to come for the foreseeable future:
https://www.theguardian.com/technology/2012/may/29/cyber-att...
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#17Sort of off topic, but reverse thrust sort of boggles my mind. If you're sucking air in from the front of the aircraft and ejecting it out the front, don't those forces counterbalance each other?
Reverse thrust doesn't come directly out the front of the engine - it's vented out the side (or, in very old engines, redirected from the back exhaust):
https://upload.wikimedia.org/wikipedia/commons/d/df/F-GTAR_A...
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#18How many easter eggs will emerge from Boeing. In last 2 months, we had similar incidents from Boeing where an undocumented software safety kicked in and causing trouble for everyone
It's not just Boeing unfortunately. Every software driven aircraft seems to suffer from these bugs. The F35 lost radio communication after crossing the international date line the wrong direction IIRC, and the pilots had to use hand signals to land.
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#19Boeing’s answer seems to say if you accidentally pull the thrust reverser lever before the aircraft is on the ground it just force shuts down the engines.
That sounds like an odd safety override. Surely a better solution would be to just not activate reverse thrust. Unlike car engines a jet engine can’t just be quickly restarted if it accidentally shuts down. It typically takes 30-60 seconds to get going.
This and earlier incidents are highlighting the dangers automation can add to mission critical systems. No pilot wants to hear notices about “hey, so in case you didn’t know our programmers added some code that does this strange uncommanded thing when you push buttons a certain way”
Re: Boeing 787 Suffers Rare Dual Engine Failure on Landing
#20"Boeing said that selecting full reverse too quickly upon landing before the aircraft has fully transitioned to ground mode could cause the system to activate." That sounds like apple's "you are holding it wrong" when "antenagate" happened. Not something I want to hear from an aircraft company where people's lives depend on it working.
Going off your quote it just looks like they're describing the symptom?
It’s a completely neutral statement, and air travel has a strong culture of not accepting “just don’t screw up” as a solution.