Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters

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The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters. This proposed AD was prompted by reports of the air conditioning system (ACS) malfunctioning. This proposed AD would require deactivating the ACS and prohibit installing the affected parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.