# SDR ASAA2023080444423

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2023
- Submitted: August 7, 2023
- Operation: Air carrier
- Aircraft: [N495AS](https://openairdocs.org/aircraft/N495AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 27,667 hours, 8,632 cycles
- System (JASC): [8000 · Engine Starting System](https://openairdocs.org/jasc/8000)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023080444423

## Discrepancy

#1 ENG FAULT CODE 73-30311, THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE, SHORT TIME FAULT. GROUNDED - YES. REF FIM 73-24 TASK 813, DURING INITIAL EVALUATION PERFORMED EEC TESTS IN ALL SWITCH POSITIONS FOUND NO FAULTS, OPS NORMAL. PER FIM THIS WAS AN INTERMITTENT FAULT, OK FOR CONTINUED SERVICE.

---
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.