# SDR MALA040768

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2004
- Submitted: December 13, 2004
- Operation: Air carrier
- Aircraft: N361PX
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B249
- Aircraft time: 33,117 hours, 28,051 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Ahrs
- Part number: 6226190113
- Part serial: 2179
- Condition: Failed
- Location: Cockpit
- Stage of operation: NR
- 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/MALA040768

## Discrepancy

AIR RETURN FOR YELLOW HEADING FLAGS.  PUSHED BOTH CA/FO HEADING SLAVE DID NOT FIX FOLLOWED QRH TO COMPLETION DID NOT FIX AVIONCS HEADING FLAG INTERMITTENTLY ON IN FLIGHT BOTH SIDES APPEAR 3 DEGREES OFF FROM STANDBY HEADING INDICATOR.  MAINTENANCE REMOVED AND REPLACED NR 2 AHRS P/N 622-6190-113, S/N OFF 2179, S/N ON 3033.  ALL CHECKS GOOD IAW SF340 CHAP 34.

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