# SDR QXEA2009070600502

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2009
- Submitted: July 6, 2009
- Operation: Air carrier
- Aircraft: N412QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4059
- Aircraft time: 19,130 hours, 19,491 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Part number: 42000332501
- Part serial: 588
- Condition: Malfunctioned
- Location: Nr 1
- Part time: 8,833 hours, 8,856 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2009070600502

## Discrepancy

SEA- NR 1 AHRS SLAVE MODE ON CLIMBOUT OF SEA.  HDG FAIL MESSAGE ON NR 1 PFD.  SWITCHED EFIS HDG ATT SOURCE TO NR 2.  DIVERTED TO PDX.  LANDING WEIGHT OF 61,800 LBS.  LANDING UNEVENTFUL.  REMOVED AND REPLACED THE NR 1 AHRS, OP'S TEST GOOD IAW MTC 6342101.  RETURNED TO SERVICE.

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