ETOPS and APU

[Rocket_Bird]

I remember seeing somewhere that during ETOPS flights, that the APU on board the aircraft must be running.  Anyone know the requirements in regard to the APU during ETOPS?

Also, if anyone knows a link with more ETOPS information, that would be great as well  :)

[Nexus]

Sounds very weird to have the APU running.
For what purpose?
Pressurization? No...I'm pretty sure the APU is unable to provide bleed air for 1 pack (let alone 2) at cruise altitude, since the APU bleed valve is automaticly shut.
It is simply too weak to provide air conditioning at cruise altitudes.
Might be for electrical reasons, but 1 generator is enough to power the systems, heck you can even fly with the AP engaged with an engine failure.

I havent heard it before, and it's not listed in my books about ETOPS. But I'm not saying it's bogus, you learn something everyday, however I'd be surprised if that was the case.

[Rocket_Bird]

Ah I just read though some different articles.  Someone on airliners.com stated that the APU doesnt have to be running, but must be operational during ETOPS.  Perhaps I've read it wrong somewhere else.  Thanks

[Nexus]

Little advice from me to you.
If you want true facts and accurate information, don't read airliners.net forums.
So much of the posts over there are garbage and nonsense.
There are way better forums than that, PPruNE for example.

[Rocket_Bird]

Cool thanks!