Airworthiness Directive 2021-12-05
one-timeAirworthiness Directives; Airbus Helicopters
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model EC155B1 helicopters. This AD was prompted by a report of difficulties when jettisoning the co-pilot door during non-scheduled maintenance. This AD requires a functional check of the pilot and co-pilot door jettisoning system and corrective actions if necessary, as specified in a European Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2021-12-05 applies to
Applies to all serial numbers manufactured before June 30, 2015, equipped with a pilot or co-pilot door jettisoning system in accordance with Airbus Helicopters modification POST MOD 0752C05, except helicopters on which AMM task 52-11-00-712 was accomplished on both pilot and co-pilot doors since the last crew door installation.
Whether AD 2021-12-05 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.