Piper Service Bulletin No. 108
- Front Seat: Piper PA-11 serial numbers 11-1 thru 11-473, 11-475 thru 11-477, 11-482, 11-485, 11-1354 thru 11-1678
- Rear Seats: Piper PA-11 serial numbers 11-1 and up
Issue Date: October 20, 1948
Subject: Front and Rear Seats
Summary: Proper maintenance and inspection of front and rear seat backs to prevent failure due to deformations in seat frames.
Open PDF: PIP_SB108.pdf