Piper Service Bulletin No. 141
Applicability: All Piper model PA-18, PA-20 and PA-22 airplanes equipped with two wing tanks
Issue Date: October 4, 1955
Subject: Fuel Selector Valve
Summary: Possibility of the fuel valve detent pins in a few valves were improperly centered, thus preventing positive indication of valve position.
Open PDF: PIP_SB141.pdf