Originally Posted by
Powderkeg
No the emphasis has been on waiting for a complete APU shutdown before turning off the ship batteries. They think not allowing time (2 min after AVAIL light goes out) can cause an erroneously low oil level in the sight gauge and then the mechanics over service it.
Makes sense as restarting the APU and letting it go through a complete shutdown before turning off the batteries can sometimes clear on erroneous APU LOW OIL message.
What is the theory behind waiting 3 mins to bleed the APU? I like the 4 min hack for starting.
Thanks guys, this has been helpful and still looking forward to more input.