# SDR 9710789605

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N605NW
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47223
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Servo
- Condition: Malfunctioned
- Location: Auto Pilot
- 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/9710789605

## Discrepancy

ELEVATOR LOCKED UP DURING CRUISE FLIGHT AT 31,000 FEET WITH AUTO-PILOT INOPERATIVE.  CREW DECLARED AN EMERGENCY AND FLIGHT DIVERTED TO STL.  AIRCRAFT LANDED WITHOUT INCIDENT.  NOTE:  FREE MOVEMENT OF ELEVATOR WAS ACCOMPLISHED AT 3,000 FEET AND 140 KNOTS AIRSPEED.  MAINTENANCE INSPECTED ELEVATOR SYSTEM AND CABLE RUNS, ALL CHECKED NORMAL.  NO BINDING WAS NOTED.  REPLACED AUTO-PILOT SERVO AS A PRECAUTION, OPERATIONAL CHECK NORMAL.

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