This document proposes to adopt a new airworthiness directive (AD) for Schweizer Aircraft Corporation (Schweizer) Model 269D and Model 269D Configuration A helicopters. The type certificate for these models is currently held by Sikorsky Aircraft Corporation (Sikorsky). This proposal is prompted by reports of loose horizontal stabilizers and cracks in the stabilizer-support structure for the extruded tailboom. The AD would require inspecting the aft fuselage assembly in the area around the attachment point of the horizontal stabilizer, including the paint, for a crack. This AD also would require inspecting the tailboom interior support structure, and if necessary, installing an inspection panel kit in the aft fuselage assembly, and installing doublers in the stabilizer support brackets. The actions specified by the proposed AD are intended to prevent separation of the horizontal stabilizer from the helicopter and subsequent loss of control of the helicopter.
Agency Contact: Stephen Kowalski, Aviation Safety Engineer, New York Aircraft Certification Office, Engine & Propeller Directorate, 1600 Stewart Ave. suite 410, Westbury, NY 11590; telephone (516) 228-7327; email firstname.lastname@example.org.
This is a proposed regulation. Comments were due on August 10, 2012.