# SDR ASAA2023102245778

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2023
- Submitted: October 23, 2023
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 37,010 hours, 11,675 cycles
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023102245778

## Discrepancy

#1 ENG START SW WILL NOT STAY ENGAGED IN GRD POSITION. WHEN HOLDING START SW MANUALLY -NO-US. GROUNDED - YES. PERFORMED OPS CHECK ON NORMAL ENGINE PROCEDURES FOR ENGINE 1 IAW B737-900 AMM 71-00-00-800-808-100. COULD NOT DUPLICATE DISCREPANCY. OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.