# SDR ASAA2022050338197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2022
- Submitted: May 5, 2022
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 29,538 hours, 9,440 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Part number: 8221567102
- Part serial: 16XYMM
- Condition: Faulty
- Location: Flight Compartme
- Part time: 5,016 hours, 15,385 cycles
- Stage of operation: CL
- 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/ASAA2022050338197

## Discrepancy

TWO SEPARATE TIMES A/S WINDOW ON MCP FROZE UP AND COULD NOT TURN AND CHANGE SPEED. ON CLIMB OUT, STUCK AT 315 THEN EVENTUALLY WAS MOVEABLE . AGAIN ON APP STUCK AT 190. HAD TO SELECT VNAV TO SET SPEED BUG. GROUNDED - YES. MCP CHANGE AND ALL TESTS PASSED. REF B737-900 AMM 22-11-34-400-801 / REF ASA L/P 60317195.

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