Airworthiness Directive · Amendment 39-15843 · Agusta S.p.A. Model AB139 and AW139 Helicopters
Agusta S.p.A. Model AB139 and AW139 Helicopters
This AD applies to Model AB139 and AW139 helicopters, serial numbers (S/N) 31005 through 31131 (except 31007, 31094, and 31124), S/N 31201 through 31209, and S/N 41001 through 41013 (except 41012), certificated in any category.
We are adopting a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and AW139 helicopters. This AD results from mandatory continuing airworthiness information (MCAI) issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI states: "Operators had reported a number of occurrences of in-flight losses of cockpit door windows, both left and right side. This condition, if not corrected, could result in damage to critical components." The actions specified by this AD are intended to require that cockpit door windows (windows) be replaced with re-designed windows to prevent a window from separating from the helicopter, contacting the tailboom or tail rotor, resulting in loss of control of the helicopter.
Within 30 hours time-in-service (TIS) or 30 days, whichever occurs first, unless already accomplished, do the following:
(f) Remove the left-hand and right-hand side cockpit door windows and replace them with airworthy cockpit door windows, part number (P/N) 3P5211A10152A1 (left-hand side window) and P/N 3P5211A48131A1 (right-hand side window). Install an emergency jettison strap, P/N 3G5610A04751, with each cockpit door window, and install an external emergency exit placard, P/N 212-072-636-109, on each cockpit door external side in accordance with steps 1. through 11. of the Compliance Instructions in Bollettino Tecnico No. 139-129, dated June 3, 2008, except you are not required to contact the manufacturer.
The MCAI requires compliance within 200 flight hours or 6 months and uses the term “flight hours.” This AD uses the term “hours TIS” rather than “flight hours,” and requires compliance within 30 hours TIS or 30 days, whichever occurs first. Also, this AD references specific steps in BT 139-129 to use in complying with the AD. Finally, this AD does not require you to contact Agusta S.p.A. AW139 Customer Support Engineering.
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: Sharon Miles, Aerospace Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, TX 76137; telephone (817) 222-5122; fax (817) 222-5961.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
