# SDR PNSA2013121503

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2013
- Submitted: December 16, 2013
- Operation: Air carrier
- Aircraft: [N677PA](https://openairdocs.org/aircraft/N677PA), registered now
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 328
- Aircraft time: 43,040 hours
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Ahrs
- Part number: 6226190113
- Part serial: 1011
- Condition: Frozen
- Part time: 5,160 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/PNSA2013121503

## Discrepancy

LEFT RED HEADING FLAG AND RED ATT ON  NR 1 EFIS REPLACED, NR 1 AHRS.

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