# SDR ASAA2016071217351

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2016
- Submitted: July 14, 2016
- Operation: Air carrier
- Aircraft: [N483AS](https://openairdocs.org/aircraft/N483AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36350
- Aircraft time: 3,344 hours, 1,131 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Sensor
- Part number: 38762983
- Part serial: 1516222107005
- Condition: Failed
- Location: Apu Oil Level
- Part time: 830 hours, 1,936 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016071217351

## Discrepancy

DURING CHECK,  FOUND CDU APU OIL QUANTITY SAYS ADD OIL, APU SIGHT GLASS WAS FULL.  ACFT GROUNDED.  REMOVED AND REPLACED APU OIL LEVEL SENSOR, IAW AMM 49-94-11. OPS CHECKED GOOD. LEAK CHECKED GOOD.

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