Airworthiness Directive 2011-10-11
one-timeAirworthiness Directives; Agusta S.p.A. Model AB412 Helicopters
What this AD requires
We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB412 helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by the aviation authority of Italy to identify and correct an unsafe condition related to the rescue hoist hook installed on this model helicopter. The aviation authority of Italy, with which we have a bilateral agreement, states in the MCAI that a missing lock pin may cause the loss of the hoist hook and any load. The absence of the lock pin constitutes an unsafe condition, and this AD is intended to detect the presence of an identification plate marked "BT 412-124," which indicates that the hook assembly has the lock pin installed to prevent the loss of a rescue hoist hook and its load.
Which aircraft AD 2011-10-11 applies to
Applies only to helicopters with a rescue hoist assembly, P/N BL-10300-60 or P/N 412-8800-01-315, with a rescue hook assembly, P/N S6150-61090-1 or P/N 412-8800-05-101, installed.
Whether AD 2011-10-11 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.