MBAAS places two RR engines April, 2016 | Americas, Leasing | 0 | MBA Aircraft Solutions (MBAAS) has placed two Rolls Royce RB211-535 E4 engines on lease with a South American Operator.This content is restricted to site members. If you are an existing user, please login below. New users may register below.Existing Users Log InUsername or EmailPassword Remember Me Forgot password? Click here to resetNew User? Click here to register