# SDR ASAA2020051932730

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2020
- Submitted: May 19, 2020
- Operation: Air carrier
- Aircraft: [N428AS](https://openairdocs.org/aircraft/N428AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36353
- Aircraft time: 16,657 hours, 5,272 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 171MM8
- Condition: Inoperative
- Location: Cockpit
- Part time: 41,971 hours, 15,052 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/ASAA2020051932730

## Discrepancy

F.O SIDE F/D ON-OFF SWITCH MA LIGHT ON MCP INOP. GROUNDED - YES. REMOVED AND REPLACED MODE CONTROL PANEL REF B737-900 AMM 22-11-34/401. OPS CHECK GOOD.

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