# SDR 97ZZZM193

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 25, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N969ML
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47268
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Vert Gyro
- Part number: 258733513
- Condition: Malfunctioned
- Location: Nr 2
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZM193

## Discrepancy

FLT 1421 - DTW - DURING CLIMB CONFIGURATION WITH THE AUTO PILOT ENGAGED EXPERIENCED A VIOLENT PITCH DOWN CONDITION, AUTO PILOT DISENGAGED.  REMOVED AND REPLACED NR 2 VERTICAL GYRO.  SYSTEM OP CHECK GOOD ON GROUND IAW DC-9 MM 34-27-0 AND 22-10-0.  (M)

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