# SDR ASAA2019042929193

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2019
- Submitted: May 3, 2019
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 44,765 hours, 13,169 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1605642
- Part serial: 5694
- Condition: Leaking
- Location: Apu
- Part time: 1,793 hours, 2,920 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019042929193

## Discrepancy

WHILE ACCOMPLISHING TSR FOR APU FREQUENT SERVICING FOUND A OIL LEAK NEAR THE AFT FITTING ON THE TURBINE SCAVENGE LINE. REF W/O 450930. GROUNDED - YES. REF FIM TASK 49-95 TASK 801 AND FOUND OIL COOLER LEAKING OIL COOLER REMOVED AND REPLACED OIL COOLER REF AMM 49-91-41 OPS CHECK GOOD.

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