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FAA orders Boeing 787 safety fix
The FAA is mandating that operators of Boeing’s 787 Dreamliner periodically reset the power on the airplane to avoid a glitch that could cause all three computer modules that manage the jet’s flight control surfaces to stop working while in flight. (www.seattletimes.com) Más...Sort type: [Top] [Newest]
Impressive to think that 787's are being flown around the clock to where there computers are continuously operating for 22 days or greater.
A lot of interesting comments in this article. How long is "brief"? If its a very short period of time why not just incorporate a restart into the preflight procedure? And your right...22 days is pretty impressive. They also mentioned overlapping restarts which makes me wonder if the systems restart on purpose at set intervals or if these are random events caused by something else. It points to a software glitch if a "fix" is supposed to be released to cure this but, really, why would any operator leave a critical system running without a restart for that long?
Why bother if they don't need to be turned off and yes its a software issue.
The AD estimates the cost of operation at $85 for on hour staff time. That may be the minimum unit they work with. Abbreviated instructions on page 5 are:
(g) Reset of FCMs
Within 7 days after the effective date of this AD, do the action specified in paragraph
(g)(1) or
(g)(2) of this AD. Repeat the
action specified in paragraph (g)(1) or (g)(2) of this AD thereafter at
intervals not to exceed 21 days.
(1) Cycle the airplane electrical power...
(2) Cycle power to the left, center, and right FCMs...
(g) Reset of FCMs
Within 7 days after the effective date of this AD, do the action specified in paragraph
(g)(1) or
(g)(2) of this AD. Repeat the
action specified in paragraph (g)(1) or (g)(2) of this AD thereafter at
intervals not to exceed 21 days.
(1) Cycle the airplane electrical power...
(2) Cycle power to the left, center, and right FCMs...
Don't think airliners ought to be strictly fly by wire. Spent too many years working aircraft electrical systems. Have met the great god "tron" on several occasions, not a nice guy. If you can't steer that thing, it's just a chunk of aluminum looking for the junk yard to land in.
The only fly by wire I trust are the cables in my J-3 Cub.
This aircraft has performed an illegal operation and will be shut down.
If the problem persists, call the aircraft vendor.
If the problem persists, call the aircraft vendor.