# SDR NOCA06406

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2006
- Submitted: May 16, 2006
- Operation: Air carrier
- Aircraft: [N750NA](https://openairdocs.org/aircraft/N750NA), registered now
- Make and model: Boeing 757-28A
- Registry model: [Boeing 757-28A](https://openairdocs.org/model/boeing-757-28a) (OpenAirDocs)
- Aircraft serial: 26277
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 6224591512
- Part serial: 5942
- Condition: Unknown
- Location: Center
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NOCA06406

## Discrepancy

IN CRUISE WITH LITE TURBULENCE THE CENTER AUTOPILOT HAD A BUMP MOTION IN THE YOKE.  THEN INITIALLY AND ALTITUDE DEVIATION.  LEFT AUTOPILOT WAS SELECTED WITH NO FURTHER PROBLEMS.  PERFORMED AUTOPILOT SYSTEM TEST PER TASK 22-10-00-735-040, ALSO AN OPERATIONAL CHECK PER TASK 22-10-00-715-002 AND NO FAULTS FOUND.  REPLACED THE CENTER FCC COMPUTER AS PRECAUTIONARY PER MM 22-11-01.

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