Simple question.....what is the fuel crossfeed requirement for a twin on ETOPS?? I've heard two sides to this:
A) Two crossfeeds are required, if a twin is to fly ETOPS
B) Only one is required, so long as it is tested on the ground and in the air prior to feet-wet
The only reason I was wondering is, I've seen AA's 762ER's fly ETOPS routes to Hawaii and LHR among other places, and they only have a single crossfeed. Also, this past fall I flew AA63 CDG-MIA, and that specific aircraft (N368AA), only had a single x-feed valve.
Anyhow, anyone who can shed light on this issue I'd much appreciate.