Peekay, correct me if I am wrong but, "when power is applied" obviously means external power, and when that is plugged in, the engines will not be running. So the GCUs are powered, even though their engines are not running. Surely the APU GCUs are in the same boat? "Powered" without the APU running? Scenario: cold ship, APU is started (or external power applied), as soon as power comes on-line,
all 6 GCUs will be powered. 248 days later,
all 6 GCUs will die.
You seem to be suggesting that the engine GCUs remain powered when the engines are stopped but the APU GCUs are "depowered" when the APU is stopped.
Tinfoil hat donned!
