AD/TPE 331/42 Amdt 1 - Torque Sensor
1AD/TPE 331/42 Amdt 1 - Torque Sensor
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series
AD/TPE 331/42
Amdt 1
Torque Sensor 1/94
Applicability: TPE331-1, -2, -3, -5, -6, -8 and -10 series engines fitted with a part number 3101726- 1 hydraulic torque sensor gear assembly.
Requirement: Replace the part number 3101726-1 hydraulic torque sensor with a P/N 3101726-2 torque sensor in accordance with Allied Signal Aerospace SB TPE331-72-0232 Revision 6 or, with a P/N 3101726-3 torque sensor in accordance with Allied Signal Aerospace SB TPE331-72-0555 Revision 4.
Compliance: Effective 6 January 1994; at next engine overhaul or next access to the affected part, whichever occurs first.
Background: This Directive requires the replacement of the P/N 3101726-1 torque sensor. The requirement reflects concern that failure of the torque sensor could result in the loss of fuel control drive. This amendment reflects the availability of the P/N 3101726-3 torque sensor which provides larger, directly lubricated "idler" gearshaft bearings.