# SDR ASAA2023092845362

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2023
- Submitted: September 29, 2023
- Operation: Air carrier
- Aircraft: [N535AS](https://openairdocs.org/aircraft/N535AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35200
- Aircraft time: 45,781 hours, 13,194 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- 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/ASAA2023092845362

## Discrepancy

APU "LOW OIL PRESSURE" LIGHT ILLUMINATED. GROUNDED - YES. INTEROGRATED CDU FOR FDR FAULTS AND ACCOMPLISHED FIM TASK AMM 49-90-803 OIL PRESSURE SHTDOWN LOW OIL PRESS FAULT ISOLATION. FAULT 49-11019. OIL QTY FULL . START/ OPS ON APU NORMAL. NO FURTHER FAULTS INDICATED. NO HISTORY PAST 120 DAYS SEAMC LANCE NOTIFIED.

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