FlyerTalk Forums - View Single Post - 787 Dreamliner failsafe timeout, after 248 days, issue

May 3, 2015 | 6:02 pm

#22

Loren Pechtel

FlyerTalk Evangelist

Join Date: Jun 2005

Posts: 38,542

Quote:

Originally Posted by exwannabe

Yeah, firmware guys forgetting that those 10ms tickers really do overflow is a ......

But in my oldschool days we would have at least used unsigned numbers and gotten 497 days before the whoops moment.

Can't be that hard to fix though. 5 minutes to code. 1 week unit test. 1 month systems test. 6 months FAA validation.

Stay far away from coding for any plane I'm flying in!!!

5 minutes to code? Sure, 5 minutes to change the timer--but what about everything that uses that timer? Changing a system data type like this has ripple effects, it's not a 5-minute fix by any means.

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