# SDR ASAA2017111222526

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2017
- Submitted: November 13, 2017
- Operation: Air carrier
- Aircraft: [N530AS](https://openairdocs.org/aircraft/N530AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36578
- Aircraft time: 29,651 hours, 8,832 cycles
- System (JASC): [4970 · APU Indicating System](https://openairdocs.org/jasc/4970)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- 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/ASAA2017111222526

## Discrepancy

AFTER APU START "MAINT" BLUE LIGHT ILLUMINATED. GROUNDED - YES. SHUTDOWN APU. ACCOMPLISHED APU BITE CHECK PER FIM 49-60 TASK 801. FAULT READ LOW OIL QUANTITY. VISUALLY CONFIRMED AT APU OIL SIGHT GAUGE THAT OIL LEVEL IS FULL. PERFORMED APU BITE CHECK AGAIN - OIL QTY FULL, BLUE MAINT LIGHT EXTINGUISHED. RAN APU - BLUE MAINT LIGHT REMAINED OUT.

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