This is more a question rather than statement concerning the 1.2 g vs the 1.3 g buffet margin restriction. It was explained to me that the US carriers and all that use US certification standards in relation to the issuance of country specific AOC's use the 1.2 g buffet margin whereas those aligned with the UK CAA use 1.3g. Reason gived way back in the past was that the UK CAA were unhappy with the ability of the a/c to potentially exceed MMO in an emergency decent with the higher cruising MNo's associated with the 1.2 g buffet boundary restriction and so wanted a greater margin for error built into their certification requirements....always thought something was missing in this explanation. However it explained why those US based 767's would eat us up years ago when we were trucking along flat cookie in our "UK certified 6"
Last edited by fire wall; 11th Sep 2003 at 20:57.