# SDR ASAA2022010337086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2022
- Submitted: January 27, 2022
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 49,328 hours, 14,692 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: None
- Condition: None
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022010337086

## Discrepancy

APU FAILED TO START. TWO ATTEMPTS. NO EGT RISE AND FAULT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED APU ECU REF B737-800 AMM 49-61-12 OPS CHECK GOOD.

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