Summary
This document proposes to revise an earlier proposed airworthiness directive (AD) that proposed repetitively inspecting the wing forward spar fuselage attachment assembly for cracks or corrosion on certain Piper Aircraft Corporation (Piper) PA-25 series airplanes, and replacing or repairing any cracked or corroded part. Since issuance of the proposal, a second incident where the wing separated from one of the affected airplanes while in flight prompted the Federal Aviation Administration (FAA) to issue AD 93-21-12 (priority letter and subsequent Amendment 39-8763) to require a one-time inspection of the wing forward spar fuselage attachment assembly on these PA-25 series airplanes, with appropriate repair or replacement. The proposed action would retain this initial inspection, and propose a repetitive inspection. The actions specified by the proposed AD are intended to prevent possible in-flight separation of the wing from the airplane caused by a cracked or corroded wing forward spar fuselage attachment assembly.