Jim L....
How many helicopters have a geniune OEI HOGE performance chart at all? Lets see....if we take any multi-engined helicopter in existence....load them to reasonable weights...defined as typical mission weights.....I doubt there are but one or two that might be able to accomplish a OGE Hover after losing one engine...meaning one engine on the 92....two engines left on the 101...two engines on the 53E....one engine left on the CH-47.
All you big iron drivers...drop yer beers...grab yer RFM's...go to the performance sections....calculate your OGE hover weight limits....expressed in percentage of an aircraft that weighs in at 90% of mauw or maum at takeoff at a sealevel...ISA day.......divide the chart weight by the 90% weight...and report the numbers....no wind ....seal level...ISA conditions.....do any pass muster with a 1.0 coeffiecient?