# SDR HALA9800023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N162AA](https://openairdocs.org/aircraft/N162AA), registered now
- Make and model: Doug DC-10-10
- Registry model: [Doug DC-10-10](https://openairdocs.org/model/mcdonnell-douglas-dc-10-10) (OpenAirDocs)
- Aircraft serial: 46943
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Vertical Gyro
- Condition: Failed
- Location: E/E Compt
- 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/HALA9800023

## Discrepancy

LOS - FLT 931 - DURING CLIMB PASSING FL 210, WHEN A/P NR 1 INITIATED HDG CHANGE, AIRCRAFT WENT INTO A RAPID RATE OF ROLL.  A/P NR 1 DISCONNECTED AUTOMATICALLY.  CAPTAINS ADI DISPLAYED ATT FLAG AND SPEED FLAG.  WHILE INTERCEPTING LOA HNL, ADI FAILED.  REPLACED NR 1 VERTICAL GRYO.  PERFORMED ADJ/TEST PER MM 34-23-00-OK.  ALSO, PERFORMED BITE CHECKED NR 1 A/P MM 22-00-02.  CHECKED GOOD.  (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.