# SDR ASAA2022091139932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2022
- Submitted: September 26, 2022
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 58,316 hours, 17,066 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Lubrication Unit
- Part number: 41310203
- Part serial: 7685
- Condition: Faulty
- Location: Apu
- Part time: 9,367 hours, 16,831 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022091139932

## Discrepancy

CSS APU FAILED START AT FL360 FAULT LIGHT ILLUMINATED APU FAILED START AT FL360 FAULT LIGHT. GROUNDED - YES. REMOVED & REPLACED APU LUBE MODULE REF B737-800 AMM 49-91-11. (ASA L/P 60396124)

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