# SDR SWIA200413086

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2004
- Submitted: March 30, 2004
- Operation: Air carrier
- Aircraft: [N220SW](https://openairdocs.org/aircraft/N220SW), registered now
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120288
- Aircraft time: 23,901 hours, 33,785 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Part number: 6226190204
- Part serial: 1731
- Condition: Malfunctioned
- Location: Nr 1
- Part time: 6,728 hours, 9,649 cycles
- Stage of operation: TX
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA200413086

## Discrepancy

CAPTAIN'S AUTOPILOT FAILED FFOD CHECK AND COMPUTER FLAG STAYS IN VIEW.  INSPECTED APC NR 1, NR 1 AHRS AND ADI NR 1 WIRING AND CONNECTORS.  NO DEFECTS NOTED.  CONTINUOUSLY TESTED AND NO FAULTS FOUND.  REMOVED AND REPLACED NR 1 AHRS FOR TROUBLESHOOTING.  OPS CHECK GOOD IAW MM 34-21-00 AND 22-10-00.

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