# SDR AALA20120112DFW01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2012
- Submitted: January 16, 2012
- Operation: Air carrier
- Aircraft: [N7509](https://openairdocs.org/aircraft/N7509), 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: 49803
- Aircraft time: 64,502 hours, 33,402 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Vertical Gyro
- Condition: Failed
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20120112DFW01

## Discrepancy

DFW - CREW REPORTED LOSS OF SEVERAL FLIGHT INSTRUMENTS.  EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED NUMBER 1 AND 2 VERTICAL GYROS.  SYSTEM GROUND CHECK NORMAL OPERATION.

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