Airworthiness Directives; Bombardier Model CL-215-6B11 (CL-415 Variant) Series Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to all Bombardier Model CL-215-6B11 (CL-415 Variant) series airplanes. This amendment requires revising the Airplane Flight Manual (AFM) to provide the flightcrew with procedures to address a temporary loss of battery bus power during engine failure and consequent erroneous indications of hydraulic system pressure, brake pressure, rudder pressure, and rudder and elevator reversion to manual mode. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to ensure that the flightcrew is advised of the potential hazard associated with a temporary loss of battery bus power during failure of the left engine or the left generator on the left engine and of the procedures necessary to address it.