AD/CON/74 - Turbocharger Oil Output Check Valve (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

Teledyne Continental Motors Piston Engines

AD/CON/74 Turbocharger Oil Output Check Valve 7/95 DM

Applicability: All Teledyne Continental Motors (TCM) model TSIO-360-E, EB, F, FB, G, GB, KB, LB, MB and model LTSIO-360-E, EB and KB engines which have had a Dukes Incorporated turbocharger oil outlet check valve P/N 367-00 (TCM P/N 641068) installed or repaired on or after 1 August 1994.

Requirement: 1. Inspect the turbocharger oil outlet check valve (TCM P/N 641068) in accordance with Section B of TCM Critical Service Bulletin (CSB) 95-1, Revision A.

2. Replace valves which are identified with an ink stamp date code of A3Q94, A4Q94, A1Q95 or the date code is not readable, before further flight.

Note: FAA Airworthiness Directive 95-08-10 refers.

Compliance: Effective 10 May 1995; prior to further flight.

Background: This Directive has been issued to require an inspection of certain turbocharger oil outlet check valves. The requirement follows advice that certain oil outlet check valves were manufactured by Dukes Incorporated contrary to manufacturing specifications. Failure of affected valves could result in damage to the engine oil scavenge pump, internal engine damage and subsequent loss of engine power.