ETOPS
Phil - the concurrent rollbacks are not mysterious, neither are they complicated. Nearer the engines, the Fuel systems "rejoin" in their critical attributes. The Plumbing, Fuel, and Fuel delivery systems are virtually identical, close in. Given they burn the same Fuel, stored identically, in identical ambient temps, I think I can explain why #2 quit seven seconds before #1. The #1 engine (Port) was fed from a tank in a wing that had been in the Sun flying West. The Starboard wing tank was in the shade of the Fuselage, on the North side of the a/c.
Right or wrong, ETOPS isn't perfect. Facetiously I suggested in a post way long ago, that true isolation would be served by mounting a Trent on #1 pylon and a GE on #2. "Designed Anomalous Systems" - DAS. What Else could I call it?
What I think would be fascinating is a hard copy made available of this thread. Warts and All. Informal Hangar Talk with the odd expert poking in now and again, a year long exercise in the new format of the "Pilot Lounge"
AF