# SDR ASAA2018120327203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2018
- Submitted: December 6, 2018
- Operation: Air carrier
- Aircraft: [N479AS](https://openairdocs.org/aircraft/N479AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60576
- Aircraft time: 13,865 hours, 4,569 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 174XHP
- Condition: Inoperative
- Location: Cockpit
- Part time: 35,569 hours, 13,875 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018120327203

## Discrepancy

ONE LIGHT BURNED OUT IN AUTOPILOT A CMD SWITCH ON GLARESHIELD. GROUNDED - YES. VERIFIED - REF AMM 22-11-34, REMOVED/REPLACED MCP. ALL REQ'D REPLACEMENT TESTS AND LLM MAINT. TESTS GOOD. GROUND VERIFICATION TESTS GOOD.

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