-
Checking fuel selector valve for ease of rotation and instructions for lubricating.
-
Exhaust muffler inspection and modification, Piper Part Number 12433-00, 12433-14, 12232-00.
-
The compliance time for inspection of lift strut assemblies is changed from every 5 years to every 12 months.
-
Instructions for correcting possible leakage of acid into the battery case of ARTEX 110-4 ELT battery packs.
-
Removal of the lower bungee cable as indicated in the attached sketch.
-
Remedy for manifold pressure gauges installed in 1951 model airplanes giving unsatisfactory service.
-
Optional installation of Auxiliary Oil Radiator Kit which will reduce the oil temperature about 20° for engines that are running excessive oil temperatures.
-
Instructions and material to reroute the rudder control cables to prevent cable contact with the adjacent fuselage frame tubes.
-
Evidence of premature internal corrosion in the steel tube structure of the vertical fin and the five tail surfaces (stabilizers, elevators, and rudder).
-
Incorporating a thru bolt (AN3-14) instead of the spring clip which was used to attach the control stick tube to the stub.