Airworthiness Directive 2012-1118
one-timeAirworthiness Directives; Eurocopter France Helicopters
What this AD requires
We are adopting an airworthiness directive (AD) for the Eurocopter France (ECF) Model AS332L2 helicopter and superseding an AD for the Model EC225LP helicopter. This AD is prompted by the manufacturer issuing additional corrective action to prevent failure of the main gearbox (MGB) due to the degradation of the epicyclic module of the MGB and expands the applicability to include the ECF Model AS332L2 helicopter because an investigation showed a failure within the epicyclic reduction gear module resulted in the rupture of the MGB case and separation of the main rotor head of a model AS332L2 helicopter in 2009. These actions are intended to prevent failure of the MGB and subsequent loss of control of the helicopter.
Which aircraft AD 2012-1118 applies to
Applies to Model AS332L2 and EC225LP helicopters, certificated in any category. Supersedes AD 2009-09-51. Unsafe condition: degradation of the epicyclic reduction gear module within the main gearbox (MGB), which could result in failure of the MGB and subsequent loss of control of the helicopter.
Whether AD 2012-1118 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
Supersession
Supersedes AD 2009-09-51.
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.