# SDR HNAA0400070

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2004
- Submitted: July 29, 2004
- Operation: Air carrier
- Aircraft: N940HA
- Make and model: Dhav DHC8102
- Aircraft serial: 156
- Aircraft time: 40,515 hours, 45,128 cycles
- Engine: Pwa PW120
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Ahrs
- Part number: 7003360941
- Part serial: 9205388
- Condition: Failed
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: I
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA0400070

## Discrepancy

WX RADAR FAILED IN FLIGHT DURING TURBULENCE. CND WX RADAR. PROBLEM OCCURRED AFTER LOSS OF THE NR 1 AHRS. REMOVED AND REPLACED NR 1 AHRU.   WX RADAR AND AHRS OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.