AD 2013-25-13
Effective 02/25/2014 · Published 01/21/2014
Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters
Summary
We are adopting a new airworthiness directive (AD) for Sikorsky Model S-70, S-70A, and S-70C helicopters. This AD establishes a new life limit based on a prorated formula for certain identified components (parts) installed on Model S-70, S-70A, and S-70C helicopters after being previously installed on certain military model helicopters. This AD was prompted by the discovery that certain parts have been interchanged…