Airworthiness Directive 2011-27-08
one-timeAirworthiness Directives; Agusta S.p.A. Helicopters
What this AD requires
We are adopting a new airworthiness directive (AD) for all Agusta S.p.A. (Agusta) model A109S and AW109SP helicopters. This AD is prompted by a fatigue crack found in the left elevator assembly along the riveting of the upper skin to the fourth rib on an Agusta A109S helicopter. These actions are intended to detect a crack, which could lead to a failure of the elevator, reduced maneuverability of the helicopter, and subsequent loss of control of the helicopter.
Which aircraft AD 2011-27-08 applies to
Applies to Model A109S and AW109SP helicopters with elevator assemblies of the listed part numbers installed, certificated in any category. Unsafe condition: a fatigue crack on the elevator assembly, which could result in failure of the elevator, reduced maneuverability of the helicopter, and subsequent loss of control.
Whether AD 2011-27-08 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.