# SDR ASAA1159494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2011
- Submitted: April 21, 2011
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 16,308 hours, 5,083 cycles
- System (JASC): [8010 · Engine Cranking](https://openairdocs.org/jasc/8010)
- Part: Switch
- Part number: 66002849
- Condition: Inoperative
- Location: Cockpit
- 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/ASAA1159494

## Discrepancy

WHILE PERFORMING WORK CARD T/C 7827300 FOUND MESSAGE NUMBER 73 20312.  THE START SWITCH SIGNAL AND AIRINC DATA BUS DISAGREE SHORT TIME FAULT NR 2 ENGINE.  PERFORMED FIM 73 24 00 810 813 AND REMOVED AND REPLACED ENGINE START SWITCH AND TEST GOOD IAW AMM 80 11 00.

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