# SDR ASAA2014092209222

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2014
- Submitted: September 26, 2014
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 26,325 hours, 8,066 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [8012 · Engine Start Valves/Controls](https://openairdocs.org/jasc/8012)
- Part: Switch
- Part number: 66002849
- Condition: Faulted
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014092209222

## Discrepancy

WHILE PERFORMING T/C 78273000, FOUND FAULT CODE 73-30311 ON NR 1 ENGINE, START SWITCH SIGNAL AND BUSS DATA DISAGREE.  ACFT GROUNDED.  PERFORMED FURTHER TROUBLESHOOTING IAW FIM REF 73-24, TASK 813.  NO CURRENT FAULT.  NUMEROUS PREVIOUS FAULTS.  EEC TEST PASSED.  DUE TO HISTORY, R & R ENGINE NR 1 START SWITCH IAW AMM REF 80-11-00-401/80-11-00-501.  OP'S CHECKED GOOD.

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