# SDR AALA20100404DFW02

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2010
- Submitted: December 1, 2010
- Operation: Air carrier
- Aircraft: N9403W
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53139
- Aircraft time: 49,734 hours, 23,962 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Condition: Faulty
- Location: Nr 1
- Stage of operation: CR
- 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/AALA20100404DFW02

## Discrepancy

DFW - INFLIGHT SJD-ORD.  CAPTAIN REPORTED HIS NAVIGATION DISPLAY WAS NOT WORKING.  EMERGENCY DECLARED FLIGHT DIVERTED DFW LANDED WITHOUT INCIDENT.  FOUND NUMBER 1 HEADING HAD NUMBER 2 ATTITUDE FAILURES.  REPLACED NUMBER 1 ATTITUDE HEADING REFERENCE SYSTEM UNIT.  SYSTEM GROUND CHECK NORMAL OPERATION.

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