# SDR MALA040519

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2004
- Submitted: August 16, 2004
- Operation: Air carrier
- Aircraft: N370PX
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B300
- Aircraft time: 28,781 hours, 24,333 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Computer
- Part number: 6226190113
- Part serial: 2846
- Condition: Malfunctioned
- Location: Ahrs
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA040519

## Discrepancy

ON POWER UP C/BS F12 & F11 POPPED.  TRIED RESETTING & POWERING UP ON INVERTER NR 2 THEN F11 POPPED.  CAPT'S SIDE AVIONICS FAILED TO INITALIZE.  AFTER RESETTING ALL BREAKERS & RESETTING PWR EVEN F11 & F12 STAYED IN.  MAINTENANCE REMOVED AND REPLACED NR 1 AHRS COMPUTER, ALL CKS GOOD IAW SAAB MM CH 34-20.  S/N OFF 2846, P/N OFF 622-6190-113, S/N ON 2247, P/N ON 622-6190-113.

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