... I thought the B407 2000fpm climb limitation was imposed to ensure successful entry to autorotation in the event that the engine failed.
The theory/"received wisdom"/folklore being that the ship in 2000 fpm climb and AUW has sufficient momentum to continue on the upward trajectory after engine failure, and will allow unrecoverable RRPM decay even if lever is dropped immediately (due to inflows in the "wrong" direction).
Has not been an issue to date in the Schweizer .....
