75-04-04 CESSNA AIRCRAFT CORPORATION: Amendment 39-2067 as amended by Amendment 39-2203. Applies to Cessna Model 305A series airplanes, modified in accordance with STC SA568SW or SA504SW (oil line rerouting), including airplanes listed in Note 3 of Aircraft Specification 5A5.
Compliance required within the next twenty-five hours' time in service after the effective date of this AD, unless already accomplished.
To prevent failure of the aluminum elbow fitting, P/N X34352, remove the fitting from the oil cooler and replace with a fitting of the same part number fabricated from brass, or Weatherhead P/N C5405X10X6, or an equivalent part approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, Federal Aviation Administration, Fort Worth, Texas.
(NOTE: Advisory Circular AC 43.13-1A, Chapter 10, provides information on the proper flex line installation procedure that should be followed when reconnecting the oil system line.These parts are available from Ector Aircraft Company, 414 East Hillmont, Odessa, Texas 79760.)
Amendment 39-2067 became effective March 10, 1975.
This amendment 39-2203 becomes effective upon publication in the Federal Register.