67-22-01 AERO COMMANDER: Amdt. No. 39-446, Part 39, Federal Register July 22, 1967. Applies to Models 500A, 500B, 560F, 680F, 680F (Pressurized), 680 FL, and 680 FL(P) Airplanes, Serial Numbers 871, 875, and 893 through 1535 except 1496, 1515, 1517, 1519, 1527, 1531, and 1532, and 1534.
Compliance required within the next 25 hours' time in service after the effective date of this AD, unless the modification has already been accomplished in accordance with Aero Commander Service Bulletin 83A dated June 25, 1965.
To prevent the main landing gear upper retaining bearing from rotating, accomplish the following:
Modify the main landing gear in accordance with Aero Commander Service Bulletin 83A dated June 25, 1965, or an equivalent approved by the Director, Southwest Region, Federal Aviation Administration. Stamp the letter "B" after the design number on each landing gear data plate after the modification is made. Modification in accordance herewith obviates modification in accordance with Amendment 676 (29 F.R. 558), AD 64-02-01.
This amendment effective August 28, 1967.