Airworthiness Directive · Amendment 39-16385 · Schweizer Aircraft Corporation (Schweizer) Model 269D Helicopters
Schweizer Aircraft Corporation (Schweizer) Model 269D Helicopters
Model 269D helicopters, certificated in any category.
This amendment adopts a new airworthiness directive (AD) for the Schweizer Model 269D helicopters. This action requires installing a Scroll Housing Blade Containment Shielding Kit on each helicopter. This amendment is prompted by 21 reports of the blades of the oil cooler impeller separating, one of which punctured the engine and transmission oil cooler resulting in loss of engine oil pressure. The actions specified in this AD are intended to protect the oil cooler from uncontained oil cooler impeller blades that could damage the oil cooler and result in loss of engine and transmission oil pressure, and subsequent loss of control of the helicopter.
To prevent the blades of the oil cooler impeller from separating and damaging the oil cooler, leading to loss of engine and transmission oil pressure and subsequent loss of control of the helicopter, do the following:
(a) Install a Scroll Housing Blade Containment Shielding Kit, part number (P/N) SA-269DK-048, on each helicopter.
Note: The Schweizer Model 269D Configuration “A” Basic Helicopter Maintenance Manual (HMI), revised April 17, 2009, contains guidance that pertains to the subject of this AD.
(b) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Contact the Manager, New York Aircraft Certification Office, Attn: Richard P. Fiesel, Aerospace Engineer, Aviation Safety Engineer, FAA, New York Aircraft Certification Office, Airframe and Propulsion Branch, 1600 Stewart Ave., suite 410, Westbury, New York 11590, telephone (516) 228-7304, fax (516) 794-5531, for information about previously approved alternative methods of compliance.
(c) The Joint Aircraft System/Component (JASC) Code is 6322: Rotorcraft Cooling Fan System.
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
