# SDR 9615096631

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N631US
- Make and model: Boeing 747251B
- Aircraft serial: 23111
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Gyro
- Part number: 788270002
- Condition: Malfunctioned
- Location: E/E Compt
- Stage of operation: CR
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9615096631

## Discrepancy

DURING CRUISE, THE AIRCRAFT EXPERIENCED A SUDDEN ROLL AND PITCH UP CONDITION.  AIRCRAFT DIVERTED TO ANC AND LANDED WITHOUT FURTHER INCIDENT.   REPLACED THE NR 1 INERTIAL NAVIGATION SYSTEM COMPUTER AND AUTO-PILOT ROLL COMPUTER.  OPERATIONAL CHECK GOOD.

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