Piper Service Bulletin No. 1026
Applicability: Piper PA-18 thru PA-44 (see Service Bulletin for serial numbers affected)
Issue Date: July 10, 1998
Subject: Inspection/Replacement of Dry Air Pump Flexible Couplings
Summary: A condition exists where the flexible coupling connecting the vacuum pump may fail prematurely, causing a loss of vacuum/pressure with the resultant loss of vacuum/pressure instruments and other appliances.
Open PDF: PIP_SB1026.pdf