# SDR ASAA2022092940209

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2022
- Submitted: October 10, 2022
- Operation: Air carrier
- Aircraft: [N483AS](https://openairdocs.org/aircraft/N483AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36350
- Aircraft time: 26,206 hours, 8,238 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Sensor
- Part number: 38762983
- Part serial: 060147001278
- Condition: Faulty
- Location: Apu
- Part time: 7,376 hours, 13,106 cycles
- Stage of operation: TX
- 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/ASAA2022092940209

## Discrepancy

AFTER LANDING, THE APU WAS STARTED AND AFTER START THE APU MAINT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED OIL SENSOR LEVEL REF B737-900 AMM 49-94-11.

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