# SDR ASAA2022112040846

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2022
- Submitted: November 21, 2022
- Operation: Air carrier
- Aircraft: [N537AS](https://openairdocs.org/aircraft/N537AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35204
- Aircraft time: 39,991 hours, 11,542 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Knob
- Part number: 8221567102
- Part serial: 18VF63
- Condition: Broken
- Location: Flight Deck
- Part time: 39,987 hours, 11,540 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/ASAA2022112040846

## Discrepancy

HDG KNOB ON MCP IS BROKEN. GROUNDED - YES. REMOVED AND REPLACED MCP REF B737-800 AMM 22-11-34. LRU TESTS PASSED.

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