AD 67-20-04

67-20-04 PIPER: Amdt. No. 39-456, Part 39, Federal Register June 29, 1967. Applies to Piper PA-28 and PA-32 Series Airplanes Equipped with Main Landing Gear Torque Links which are Drilled for Lubricator Fittings.

Compliance required within the next 25 hours' time in service after the effective date of this AD, unless already accomplished.

To preclude the possibility of failure of the main landing gear torque link, accomplish the following:

(a) Measure the distance from the edge of the bolt hole to the edge of the machined surface on the boss on the small (scissor) end of each of the main landing gear torque links. If this distance is .350 inches or less, the link must be replaced, either individually or in pairs, with Piper Part Number 65691-00. When replacing the link, install Piper Kit Number 757 123, which consists of a grease bolt, P/N 65799-00, a brake line clip, P/N 63332-05, a washer, P/N 62833-27, an AN310-C5 nut, P/N 404 122, and an AN-381-2-8 cotter pin, P/N 424 080. One kit is required per landing gear.

(b) Inspect to determine the amount of contact on the face of the torque link stops. If the contact of the stops is along the inboard edge only, or outboard edge only, the face must be reworked to insure contact is maintained over the entire width of the bearing surface. This is required to preclude the possibility of side loads on the torque links.

NOTE: Service the landing gear assembly to assure correct fluid content, air pressure and piston exposure in accordance with the Piper PA-28 or PA-32 Service Manual, as appropriate.

(Piper Service Bulletin No. 248 dated May 12, 1967, covers this same subject.)

This amendment effective September 27, 1967.