# SDR UIEA200800318

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2008
- Submitted: October 21, 2008
- Operation: Air carrier
- Aircraft: N523MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21782
- Aircraft time: 96,644 hours, 19,014 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200800318

## Discrepancy

ATB BOTH AUTOPILOTS A AND B WILL NOT ENGAGE.  BOTH TESTED OK ON GROUND.  A/P A AND B PITCH AND ROLL COMPUTERS,  FLIGHT CTL HYD PWR SHUT OFF SWITCHES ALL CHECKED IN ON POSITION.  ACCESS BOXES INSTALLATION OCCURRED OK.  MSP ELECT CONNECTORS INSPECTION NO FAULTS.

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