On 2007-04-24 10:19:56 -0700, "Al G" said:


"Jim Carter" wrote in message
et...
Aircraft using FADEC are relatively recent so why isn't power-loading
prioritized by the electrical system? When an electrical event occurs that
overloads the system capacity, why isn't there enough built-in systems
intelligence onboard to protect the FADEC? If we have enough smarts to
design and build a FADEC why don't we have enough smarts to protect it?

--
Jim Carter
Rogers, Arkansas

Well said. It should have some fall back. If the coffee maker shorts the
engines quit?

Al G

That is a little over the top, really. A look at the electrical diagram
shows the problem: the alternators were not working because the
excitation system failed and the backup generator did not generate
enough power to run everything. Not a problem in most circumstances,
but a pilot should be smart enough not to take off in that condition.

That said, I think protecting essential systems such as the engine is a
good idea. It ought to be part of the fix, along with a bigger
generator, revised engine checklist for starting engine with remote
power (don't, under any circumstances, start both engines this way --
there is no such thing as an emergency take-off) and better pilot
training.
--
Waddling Eagle
World Famous Flight Instructor