# SDR ASAA2022011237172

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2022
- Submitted: January 19, 2022
- Operation: Air carrier
- Aircraft: [N913AK](https://openairdocs.org/aircraft/N913AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44079
- Aircraft time: 2,549 hours, 927 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Sensor
- Part number: 38762983
- Part serial: 1916222110942
- Condition: Failed
- Location: Apu
- Part time: 1,484 hours, 1,000 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022011237172

## Discrepancy

APU OIL LEVEL SHOWS CENSOR CIRCUIT FAILURE  GROUNDED - YES. REMOVED AND REPLACED THE APU OIL LEVEL SENSOR. REF B737-9 AMM 49-94-11. LEAK CHECK GOOD. NO FAULTS NOTED. OPS CHECK GOOD.

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