# SDR ASAA2023070543908

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2023
- Submitted: July 7, 2023
- Operation: Air carrier
- Aircraft: [N514AS](https://openairdocs.org/aircraft/N514AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35193
- Aircraft time: 52,927 hours, 15,626 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023070543908

## Discrepancy

APU GEN OFF LIGHT NOT ILLUMINATING WHEN APU IS OPERATIONAL. GROUNDED - YES. STARTED APU. APU GEN OFF LIGHT WORKS NORMAL. CYCLED APU GEN OFF AND ON SEVERAL TIMES WITH NO FAULTS. APU GCU BITE GOOD. REF FIM 24-21 TASK 801.

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