Originally Posted by
Check Airman
On the 320, the RAT can be used to power a backup generator via a hydraulic pump.
Just curious - but is that basic (and automatic) on the A320?
I know on the 757/767 they added hydraulic generator - but that wasn't basic, it was part of the (optional) ETOPS package. They battery was supposed to be good for 30 minutes (only powering critical systems) which was basically as long as you could realistically glide after an all engine power loss. The hydraulic generator was for case where you lost main bus electrical power but the engines were still running (I don't think it could operate off the RAT, but I'm not positive). RAT hydraulic power is pretty limited...