Piper Service Bulletin No. 90
Applicability: Piper PA-12 serial numbers 12-1 thru 12-207
System: Engine
Issue Date: July 7, 1946
Subject: Safety Wiring of Carburetor Air Box Cap Screws
Summary: Instructions on safety wiring the cap screws currently being used to attach the carburetor air box to the carburetor.
Open PDF: PIP_SB90.pdf