# SDR 9623299301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N301RC](https://openairdocs.org/aircraft/N301RC), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 48054
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Vertical Gyro
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9623299301

## Discrepancy

DURING CLIMB, CAPTAIN'S ADI BEGAN PRECESSING, TESTED OK ON PREFLIGHT.  AUTO-PILOT DISCONNECTS AND WILL NOT ENGAGE IN NR 1 OR NR 2.  REPLACED THE NR 1 VERTICAL GYRO.  RAN RTS CHECK ON BOTH NR 1 AND NR 2 AUTO-PILOT AND FLIGHT DIRECTOR.  RERAN BOTH ON APU POWER AND BOTH OPERATIONALLY CHECKED GOOD.

---
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.