81-23-02 TELEDYNE CONTINENTAL MOTORS: Letter issued October 30, 1981. Applies to Teledyne Continental Motors Models TSIO-360-EB, S/N 311703 and 311704; LTSIO-360-EB, S/N 312685; TSIO-360- KB, S/N 315204, 315209 through 315259, 315262 through 315274, 315277, 315283, 315284, and 315323; LTSIO-360-KB, S/N 314195, 314204, 314208 through 314274, 314276, and 314277; and TSIO-360-GB, S/N 309600, 309601, 309603 through 309618, 309622 through 309627, 309629 through 309641 and 309655 aircraft engines.
Compliance required prior to further flight after receipt of this letter. To prevent possible failure of the oil filter adapter gasket, accomplish the following:
(a) Inspect the oil filter adapter (TCM P/N 641576) flange at the machined alternator relief cutout in accordance with the inspection procedure described in TCM Special Service Notice 10-81, dated October 19, 1981.
(b) If the machined alternator relief cutout intrudes into the shoulder (no matter how little), replace the adapterTCM P/N 641576 with a serviceable part which meets the inspection criteria of TCM Special Service Notice 10-81.
(c) Make appropriate maintenance record entries indicating compliance with this AD.
An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region, P.O. Box 20636, Atlanta, Georgia 30320. Teledyne Continental Motors Special Service Notice 10-81, dated October 19, 1981, applies to this subject.
This Airworthiness Directive becomes effective upon receipt.