# SDR CALA2015022793181

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2015
- Submitted: February 27, 2015
- Operation: Air carrier
- Aircraft: N598UA
- Make and model: Boeing 757222
- Aircraft serial: 28751
- Aircraft time: 61,443 hours, 16,754 cycles
- Engine: Pwa PW2037
- Engine time: 28,792 hours, 19,648 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Faulty
- Location: Apu Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2015022793181

## Discrepancy

APU ALTITUDE NO START, COLD SOAK FL 380.  APU SHUTDOWN AFTER REACHING 95% SPEED AFTER 10 SECONDS.  SERVICED APU TO FULL, APU STARTED.  WHILE RUNNING, OBSERVED LARGE PLUMES OF SMOKE FROM EXHAUST.  AUTO SHUTDOWN AFTER FIVE MINUTES.  RECHECKED OIL LEVEL & FOUND NO OIL LEVEL IN SIGHT GLASS.  REPLACED APU IAW AMM 49-11-01.  LEAK CHECKED GOOD.

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