FAA proposes airworthiness directive for Airbus BK 117 D-2 helicopters over fuel leak risk

The FAA proposes a new airworthiness directive for all Airbus Helicopters MBB-BK 117 D-2 models after certification tests showed the common cargo hook beam could cause fuel leakage in a survivable crash. The directive would mandate modification of the CCHB and fuel system, structural reinforcement, and prohibit installation of the affected CCHB. This is a regulatory safety action affecting a specific helicopter model, with implications for operators and maintenance schedules.