Airworthiness Directive · Amendment 39-16692 · Agusta S.p.A. Model AB412 Helicopters
Agusta S.p.A. Model AB412 Helicopters
This AD applies to Model AB412 helicopters, with rescue hoist assembly, part number (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, certificated in any category.
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.
Before further flight, unless accomplished previously, inspect the rescue hoist hook assembly (hook assembly) for the presence of an attached identification plate marked “BT 412-124.”
(1) If this identification plate is installed on the hook assembly, no further action is required.
(2) If this identification plate is not installed on the hook assembly:
(i) Review the hook assembly maintenance records to determine if the hook assembly was manufactured after April 1, 2008. If so, no further action is required.
(ii) If the hook assembly date of manufacture is March 31, 2008, or earlier or if the date of manufacture cannot be determined, replace the hook assembly with an airworthy hook assembly that was either manufactured after April 2, 2008, or has an identification plate installed that is marked “BT 412-124.”
This AD differs from the MCAI as follows:
(1) We do not require inspecting spare part hook assemblies.
(2) We do not require a March 31, 2008 compliance time because that date has passed.
(3) We do not require returning a hook assembly in which there is no lock pin installed to the manufacturer.
Alternative Methods of Compliance (AMOCs): The Manager, Safety Management Group, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: George Schwab, Aerospace Engineer, Safety Management Group, FAA, Rotorcraft Directorate, 2601 Meacham Blvd., Fort Worth, TX 76137; telephone (817) 222-5114; fax (817) 222-5961.
