Airworthiness Directives; Eurocopter France Model AS350B, BA, B1, B2, B3, D, and AS355E, F, F1, F2, and N Helicopters

This amendment adopts a new airworthiness directive (AD) for Eurocopter France Model AS350B, BA, B1, B2, B3, D, and AS355E, F, F1, F2, and N helicopters that requires replacing certain circuit breakers. This amendment is prompted by the discovery of the loss of electrical continuity between the terminals of an installed circuit breaker. The actions specified by this AD are intended to prevent loss of electrical power to the emergency flotation gear or other optional installations and subsequent loss of the helicopter emergency flotation capability.