# SDR ASAA2020020542085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2020
- Submitted: February 6, 2020
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 22,710 hours, 7,384 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Fault Light
- Condition: False Activation
- Location: Apu
- 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/ASAA2020020542085

## Discrepancy

ON APU START WE RECEIVED A FAULT LIGHT WITH UNSUCCESSFUL START AFTER APPROXIMATELY 1 MINUTE, FAULT LIGHT WENT OUT. GROUNDED - YES. APU BITE SHOWS 49-41012 MESSAGE, NO APU ROTATION. APU STARTED & OPS NORMAL ON SECOND ATTEMP.

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