71-05-06 AEROSTAR: Amdt. 39-1164. Applies to Models 600 and 601. Serial numbers 60-0001 through 60-0056 and 61-0001 through 61-0070.
Compliance required within the next 100 hours time in service after the effective date of this AD or at the next annual inspection, unless already accomplished.
To prevent collapse of the main landing gear, replace the main landing gear sidebrace assemblies in accordance with Instructions I, II, III and IV of Aerostar Service Bulletin No. 600- 21, dated December 29, 1970, or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southwest Region, Fort Worth, Texas.
This amendment becomes effective April 5, 1971.