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Boeing 787 Dreamliner suffers new setback after ANA discovers wiring defects
Boeing 787 Dreamliner suffered a fresh setback after All Nippon Airways (ANA) said it discovered wiring defects in the fire-suppression system on three aircraft. The fault, first detected on a 787-8 due to depart Tokyo’s Haneda airport Aug. 14, would trigger the wrong extinguisher in the event of a blaze in one of the two engines, ANA said. Japan Airlines recalled a 787 flying to Helsinki from Tokyo as a precaution, and Boeing said it was investigating the flaw. (airguideonline.com) Más...Sort type: [Top] [Newest]
Wouldn't a fire suppressor be a network addressable device, and therefore the problem be an incorrect network address which might happen during an engine swap for instance?
Entirely possible.
The problem was reported as a wiring issue, which that would not be. But who knows what the real underlying issue might be.
The problem was reported as a wiring issue, which that would not be. But who knows what the real underlying issue might be.
The article reported that a wiring or mis-wiring problem was discovered during pre-flight. maintenance. But no matter when it was discovered a wiring anomaly was found in 3 ANA pieces not a software glitch.
I'm not familiar with the bottle design, so I'm open to the neywork configuration being hard-wired on the actual device, and not changeable remotely. Once installed in an particular location, there would be no need to change its' network ID, so a hardware settable ID configuration could be useful. But as I said, I'm not familiar with their design, but originally assumed that a particular wire from a particular switch controlled a particular bottle on a particular engine. But it could be networked as well.
This airplane is a digital colossus. The carbon fiber structures are not so worrisome. Boeing has mostly eliminated hydraulics for control surfaces to save weight. It's just about all electrical now and dependent entirely on the integrity of software systems. Software cowboys will tell you that it is virtually impossible to track down many glitches. Finding some is a matter more of statistical probability than chasing down a wire or connector. Mostly it's luck. So? Thinking that there must be someone to blame, an incompetent mechanic, a conspirator, an Airbus saboteur, is a leap into the abyss. What if it's a series of intermittent problems no one of which can be traced. There are "ghosts" in these machines and most likely the problems will, like many bizarre medical symptoms caused by hidden lesions or strange viruses, either surface or disappear. Airbus A-350's, as the A-380 will have the same sort of malfunctions most of which cannot be predicted. So, my hope is that a bunch of these issues will "pack down." Of course, new ones will surface.
That Is a good new for 787-8
Finally the problem will be repair
Finally the problem will be repair
Sorry. I'd like to love Boeing but this is just very sloppy. If an assembly step carries the risk of failure due to human error, you put steps in place to make sure no errors have occurred.