# SDR ASAA2018082065819

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2018
- Submitted: August 20, 2018
- Operation: Air carrier
- Aircraft: [N469AS](https://openairdocs.org/aircraft/N469AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41702
- Aircraft time: 16,137 hours, 5,379 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Fault Message
- Condition: False Activation
- Location: Nr 2 Engine
- Stage of operation: IN
- 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/ASAA2018082065819

## Discrepancy

NR 2 ENGINE BITE TEST SHOWED FAULT MESSAGE 73-30312.  THE START SWITCH SIGNAL AND ARINC BUSS DATA DISAGREE.  ACFT GROUNDED.  CHECKED HISTORY FOUND NO RECENT FAULTS.  TESTED EEC NR 1 & 2 AND START SWITCH IAW  FIM 73-24 TASK 813. NO DEFECT NOTED.

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