# SDR 97ZZZM261

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N942ML
- 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: 47478
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot
- Condition: Malfunctioned
- Location: E/E Compt
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZM261

## Discrepancy

FLT 640 - DTW - AUTOPILOT VIOLENTLY PITCHES UP AND DOWN DURING CRUISE FLIGHT.  AUTOPILOT CONTINUED TO AUTOMATICALLY DISCONNECT.  BOTH PILOTS HAD TO OVERRIDE THE AUTOPILOT TO MAINTAIN ALTITUDE AND CONTROL.  TRANSFERRED TO DMI NR 00151 MEL 22-1 CATEGORY 'C'.  (M)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.