# SDR IPXA2022101987285

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2022
- Submitted: October 19, 2022
- Operation: Air carrier
- Aircraft: [N453UP](https://openairdocs.org/aircraft/N453UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25474
- Aircraft time: 36,636 hours, 21,183 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Panel
- Condition: Inoperative
- Location: Cabin
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2022101987285

## Discrepancy

INSPECTION TYPE:N/A**ATB** MCP ALTITUD WINDOW FROZE AT 4900' REMAINDER OF FLIGHT AND AFTER POWER RESET ON GROUND DURING AND AFTER SHUTDOWNR/R'D MODE CONTROL PANEL PER MM 22-11-02-201 PERFORMED MCDP TEST 4 FOR MCP PER FIM22-03-00-815-829 FIG 103 TESTS NORMAL

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