# SDR UPS06547720

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2006
- Submitted: August 18, 2006
- Operation: Air carrier
- Aircraft: [N434UP](https://openairdocs.org/aircraft/N434UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25465
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS06547720

## Discrepancy

AIR TURNBACK, EVERY FUNCTION ON MODE OF CONTROL PANEL UNABLE TO SET.  ON ARRIVAL FOUND ALT AND IAS/MACH DISPLAYS MISSING DIGITS AND BACKLIGHTING NOT WORKING ON MSP.  REMOVED AND REPLACED AUTOPILOT MODE SELECT PANEL W/REFERENCE MM 22-11-02. PERFORMED TEST IAW MM 22-10-00-5 AND MCDP GROUND TEST 04. CHECKS GOOD.

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