# SDR ASAA2017081821668

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2017
- Submitted: August 21, 2017
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 37,813 hours, 11,524 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Connector
- Condition: Dirty
- Location: Apu Oil Qty
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017081821668

## Discrepancy

APU OIL QTY READS UNKNOWN ON CDU.  ACFT GROUNDED.  PERFORMED APU BITE IAW FIM 49-60 TASK 801. FOUND MAINT MESSAEG 49-94304 OIL LEVEL SENSOR SHOWS CIRCUIT FAILURE. DISCONNECTED P16 FROM OIL LEVEL SENSOR AND CLEANED CONNECTION IAW FIM 79-90 TASK 811. RECONNECTED P16. APU BITE CHECKED GOOD. NO CURRENT FAULTS. OIL QTY READS FULL. OIL QTY VISUALLY CHECKED NORMAL FULL RANGE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.