I've always been under the impression that if I could avoid shutting down an errant engine, (say just keep it at idle), that this would prevent possible adverse ETOPS penalties down the road based on my company's reliability program for that particular model of engine.
At least that's what I've been led to believe from our line check airmen (LCA's).
Last edited by wanabee777; 25th Oct 2015 at 05:31.