Piper Service Bulletin No. 109
Applicability:
- Piper PA-12 serial numbers 12-1 and up
- Piper PA-14 serial numbers 14-1 thru 14-193
System: Control
Issue Date: November 9, 1948
Subject: Cracking of Aileron and Flap Bellcranks
Summary: Reports of cracks in the cast aluminum aileron bellcranks due to excessively tightening of the bolt which attaches the aileron push rod to the bellcrank.
Open PDF: PIP_SB109.pdf