Piper PA-25

Procedures for replacing brake drum flanges on PA-22, PA-23, PA-24 and PA-25 wheel assemblies.

Tightening engine mounting bolts to obtain a torque of (40) inch pounds.

Servicing instructions for the carburetor air filter with paper cartridge.

Procedure for examining both left and right Univair hydrasorb (U486-604-1) for any possible cracks or irregularities.

Instructions for compliance with Marvel-Schebler Division Bulletin No. A1-69.

Revises compliance time, purpose, and instructions for inspection and/or replacement of wing lift strut assembly. Also announces the availability of new sealed lift struts.

Installation of a placard on the Pilot's instrument panel warning against using improper procedures in applying the parking brake.

Outlines the repair of Univair STC'd Stamped Ribs in accordance with the original STC and FAA Advisory Circular AC 43.13-1B.

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.

Per Lycoming Division of Avco Corporation, it is permissible to use a torque value of 40 inch pounds to provide adequate tightness to maintain proper engine support in lieu of the linear dimension as previously specified.

The following listing denotes the location of the Cylinder Head Temperature Probe for Piper aircraft.

Contains the Ceconite Application, Maintenance and Repair Procedures for Piper PA-18 and PA-25 models.

The following installations have been FAA approved in the field. The party securing the approval is also listed.

Addresses a potential for impulse coupling failure, which can result in total loss of engine power.