# SDR ASAA2014061108187

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2014
- Submitted: June 16, 2014
- Operation: Air carrier
- Aircraft: [N402AS](https://openairdocs.org/aircraft/N402AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41189
- Aircraft time: 6,361 hours, 2,049 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Message
- Condition: False Activation
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014061108187

## Discrepancy

NR 1 ENG HAS MAINTENANCE MESSAGE 73-30311, "START SWITCH SIGNAL AND BUS DATA DISAGREE" ACFT GROUNDED.  ACCOMPLISHED FIM 73-24 TASK 813.  INITIAL EVALUATION SHOWS NO CURRENT FAULTS.  PERFORMED EEC TEST FOR NR 1 ENG AMM TASK 73-21-00-700-804-F00.  TEST PASSED.  NO MAINTENANCE MESSAGES LOGGED.

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