04/11/2022Univair
Installation of a new gasket with more cushioning properties to eliminate breakage of the glass fuel strainer bowl.
09/22/2021Univair
Instructions on safety wiring the cap screws currently being used to attach the carburetor air box to the carburetor.
09/22/2021Univair
Installing an additional tailpipe brace to eliminate possible cracking of the muffler around the tailpipe outlet.
09/22/2021Univair
Adding reinforcement to prevent landing gears cracking and breaking at the upper end of the tie strap.
09/22/2021Univair
Replacing the glass fuel strainer bowl with an aluminum bowl.
09/22/2021Univair
Relocating the voltage regulator due to the excessive heat at the lower right side of the firewall.
09/22/2021Univair
Progressive failures of weld points in the landing gear.
09/22/2021Univair
Possibility of a short circuit occurring between the battery terminal bases and the battery box.
09/22/2021Univair
Possibility of cowl attachments loosening and allowing the nose cowl to bear against the starter ring-gear casting near the propeller hub; in some cases, actually severing the casting.
09/22/2021Univair
Possibility that the shielding on the magneto ground wire may come in contact with the terminal at the magneto attachment, causing grounding of the magneto and resulting in engine failure.
09/22/2021Univair
Summary of service difficulties experienced with the electrical system in the Model PA-12 and recommendations as to how to remedy these difficulties.
04/11/2022Univair
Loose end fitting on the flexible fuel line connecting the fuel strainer to the carburetor.
09/22/2021Univair
Deterioration of the insulation on the battery hold-down, allowing the bracket to contact the battery terminals and cause a short circuit.
09/22/2021Univair
Reports of cracks occurring in the aileron hinge bracket to false spar fittings at the bend between the channel port and the flat portion of the fitting.
09/22/2021Univair
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.
04/12/2022Univair
Inspection to ascertain that the flattened tube end fitting at each end of the connector tube is riveted in place as shown in sketch.
04/11/2022Univair
These inspection notes are issued as a recommended check list to assist owners, operators, and maintenance personnel in keeping their Piper airplanes in an airworthy condition.
04/12/2022Univair
How to fix difficulties with the fabric where it attaches to the fuselage under the windshield top and/or directly over the rear edge of the windshield top attachment channel.
09/22/2021Univair
Reported cases of failure of a tail brace wire (10074-02 or 10074-03) on the above listed airplanes.
04/12/2022Univair
Reports of collapsed wing mounted fuel tanks due to inadequate venting of the tank.