# SDR ASAA2017041120429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2017
- Submitted: April 13, 2017
- Operation: Air carrier
- Aircraft: [N531AS](https://openairdocs.org/aircraft/N531AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35199
- Aircraft time: 26,817 hours, 7,972 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 17CK37
- Condition: Intermittent
- Location: Cockpit
- Part time: 31,650 hours, 9,566 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/ASAA2017041120429

## Discrepancy

AUTOPILOT A DOES NOT ENGAGE IN CMD OR CWS.  ACFT GROUNDEDS. DFCS FFR SHOWED 2 FLIGHTS WITH 17 FAULTS OF MCP ELEV/AIL ENGAGE DISAGREE 22-11625 AND 22-11626 FAULTS. MCP WAS SHOWN AT FAULT. DID PASS MCP QUICK TEST 32.  REMOVED & REPLACED MCP, IAW AMM 22-11-34. OPS NORMAL.

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