# SDR ASAA2014050907723

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2014
- Submitted: May 10, 2014
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 25,146 hours, 7,349 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1605642
- Part serial: 3571
- Condition: Leaking
- Location: Apu
- Part time: 4,266 hours, 9,869 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014050907723

## Discrepancy

APU HAS A HISTORY OF OIL SERVICING CURRENT OIL CONSUMPTION IS HIGHER THAN EXPECTED GROUNDED.  C/W FIM TASK 49-95-00-810-801.  FOUND APU TO BE LEAKING FROM AFT DRAIN.  FOUND OIL COOLER LEAKING ON SHUTDOWN.  REPLACED THE APU OIL COOLER, REF AMM 49-91-41/401.  NO LEAKS NOTED DURING APU OPERATION.

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