# SDR ASAA11510212

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2011
- Submitted: August 8, 2011
- Operation: Air carrier
- Aircraft: [N587AS](https://openairdocs.org/aircraft/N587AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35684
- Aircraft time: 14,392 hours, 4,311 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1605642
- Part serial: 3675
- Condition: Defective
- Location: Apu
- Part time: 3,517 hours, 5,514 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA11510212

## Discrepancy

APU OIL CONSUMPTION CONTINUES TO BE HIGHER THAN EXPECTED CURRENT CONSUMPTION.  TSR ISSUED.  REPLACED APU OIL COOLER REF MM 49 91 41 400 801.  LEAK AND OPS CHECK GOOD.

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