SDR NACA2022083100003

Service difficulty report · Sensor · Boeing 767

Difficulty date: August 31, 2022
Submitted: September 7, 2022
Operation: Air carrier
Aircraft: N351CM
Make and model: Boeing 767
Aircraft serial: 25201
Aircraft time: 107,223 hours, 19,597 cycles
System (JASC): 4900 · Airborne Auxiliary Power Unit (APU) System
Part: Sensor
Part number: 3876035
Part serial: 61626364
Condition: Failed
Stage of operation: NR
How discovered: V
Nature of condition: O
Precautionary procedure: D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

APU FAULT AIRBORNE - RTB DUE TO R GEN DRIVE INOP. TS OVERSPEED MSG SHUTDOWN @ ECU, PERFORMED FIM 49-11 FAULT TREE 968, REMOVED P2 SENSOR TUBE, WAS CLEANED AND PLACED BACK TO ORIGINAL CONFIG. REPLACED APU INLET PRESSURE SENSOR AS PER REF B767 AMM 49-61-04. NO TIME IN TRAX AVAILABLE.

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