# SDR ASAA2020030932387

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2020
- Submitted: March 10, 2020
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 23,063 hours, 7,475 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: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020030932387

## Discrepancy

APU "FAULT" LIGHT ILLUMINATED AT APU START PER QRH ATTEMPTED 2ND START AFTER FAULT LIGHT EXTINGUISHED 2ND STARTED SUCCESSFUL. GROUNDED - YES. PERFORMED APU BITE TEST FOUND FAULT 49-41010. STARTED APU AND FAULT LIGHT REMAINED EXTINGUISH. CSS APU PASSED.

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