8che,
Please re-read my posts, I made no specific reference to engine out condition, just the impossibility of any of us achieving the raw unfactored figures. Believe me, I have gone close, taking a B707-321C into Lasham.
As to engine-out field lengths (if any) --- any idea where they (or any "data" for other non-normal approach conditions) might come from??
As to what is manufacturer's "certified" data in an aeroplane performance manual -- that is a whole other can of worms, where those who have never bothered to acquaint them selves with the facts argue their misconceptions.
Tootle pip!!