# SDR ASAA2020022732285

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2020
- Submitted: March 10, 2020
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 48,864 hours, 14,539 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 4082260939
- Part serial: 01645902
- Condition: Intermittent
- Location: Cockpit
- Part time: 50,586 hours, 24,490 cycles
- Stage of operation: NR
- 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/ASAA2020022732285

## Discrepancy

F/O MA MASTER LIGHT INOP, FLIGHT DIRECTOR OPS NML. GROUNDED - YES. REMOVED AND REPLACED MCP PER B737-800 AMM 22-11-34. PERFORMED GOOD INSTALLATION TEST AND ALL REQUIRED LLM TESTS PER AMM 22-11-34-400-801. ALL REQUIRED TESTS PASSED.

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