[expatpat]

It wasn't a computer malfunction, but a sensor malfunction, apparently due to a problem with the system handbook.

[PAR35]

apparently due to a problem with the system handbook.

No, it was caused by a lack of electricity. If a battery (or as another poster pointed out, a capacitor) had been wired into the system, there would not have been a power loss in the brief period of time between engine shutdown and apu takeover.

The problem might be solvable by either a manual or computer driven cut-over to the APU before the engine is shut down.

[sgtbono2002]

Sensor , Computer , its all part and parcel of the system.

[bvw]

I'd call it a software design drop-out. Such sequence after unsual circumstance contingencies can be caught by astute designers or testers. However many aren't. I caught some on an F/B eject sequence wherein a system failover occurred. They had been there, latent, for years and years.

But I am not representative of the average sw engineer. Sui generis.