# SDR 9621085504

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N504US
- Make and model: Boeing 757251
- Aircraft serial: 23193
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Press Valve
- Part number: GTCP331200ER
- Condition: Malfunctioned
- Location: Apu
- Part time: 24,474 hours
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9621085504

## Discrepancy

DURING CRUISE FLIGHT, APU OIL LOW LIGHT ANNUNCIATED.  FLIGHT CREW SHUT DOWN APU AND DIVERTED TO LAS DUE TO NR 2 ENGINE IDG ON MEL.  MAINTENANCE REPLACED APU OIL PRESSURE REGULATING VALVE, SERVICED APU WITH OIL, GROUND RAN APU FOR 3.5 HOURS AND NO OIL LOSS NOTED.  REPLACED NR 2 ENGINE IDG.

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