# SDR ASAA2023013141737

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2023
- Submitted: February 1, 2023
- Operation: Air carrier
- Aircraft: [N495AS](https://openairdocs.org/aircraft/N495AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 25,570 hours, 7,996 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: None
- Part number: 8221567102
- Part serial: 41FFMN
- Condition: Failed
- Location: Flight Deck
- Part time: 30,830 hours, 9,128 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/ASAA2023013141737

## Discrepancy

FIRST OFFICERS COURSE SELECTOR KNOB DOES NOT WORK. GROUNDED - YES. REPLACED MCP REF B737-900 AMM 22-11-34, OPS NORMAL REF FMM 22-11-34-740-801.

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