This Special Airworthiness Information Bulletin (SAIB) alerts you, owners and operators of certain Piper Aircraft, Inc. (Piper) Models PA-31*, PA-31-300, PA-31-325, and PA-31-350 airplanes, of cracking discovered in the wing main spar lower cap at the aircraft centerline spar splice plate. This SAIB also provides guidance on recommended inspections for these Piper airplane models at the damage location.
*Note: The Model PA-31 may also be identified as a PA-31-310, even though the PA-31-310 is not a model recognized by the Federal Aviation Administration (FAA) on the type certificate data sheet.
At this time, this airworthiness concern has not been determined to be an unsafe condition that would warrant AD action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.
SAIB: WING SPAR – Main Spar Lower Cap Cracks
By Jen D
