Piper Service Bulletin No. 522
Applicability: Piper PA-11, PA-12, PA-14, PA-16, PA-18, PA-20, PA-22
System: Fuel
Issue Date: September 28, 1976
Subject: Wing Fuel Tank Cap Modification
Summary: Reports of collapsed wing mounted fuel tanks due to inadequate venting of the tank.
Open PDF: PIP_SB522.pdf