Piper PA-20

Maintaining an adequate seal between the baffle and the cowl, in order to insure proper flow of cooling air.

Inquiries relative to the new "Duraclad" finish on our 1951 Model airplanes.

Remedy for manifold pressure gauges installed in 1951 model airplanes giving unsatisfactory service.

Suggestions to alleviate troubles with the stabilizer adjusting mechanism.

Instructions for sealing any gaps or holes in the firewalls with non-hardening fireproof putty.

Incorporating a heavy duty navigation light switch, Piper part number 484-575, manufactured by the Ohmite Manufacturing Company.

To prevent excessive wear of the primer line, resulting in fuel leakage and possible cabin fire, it is recommended that primer lines be clamped and/or re-routed per the sketch included with this letter.

Update to Service Letter #209.

Discussion concerning the useful life of the eight rubber engine support bushings, Lycoming part number 60883.

Information concerning the use of safety belts which do not have TSO approval.