# SDR QR9R20220802001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2022
- Submitted: August 2, 2022
- Operation: General aviation
- Make and model: Bolkms BK117C2
- Aircraft serial: 09721189342
- Aircraft time: 3,236 hours
- System (JASC): [3422 · Directional Gyro and Indicating System](https://openairdocs.org/jasc/3422)
- Part: Ahrs
- Part number: 42000332460
- Part serial: 577A
- Condition: Failed
- Stage of operation: HO
- How discovered: V
- Nature of condition: F
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R20220802001

## Discrepancy

#1 AHRS FAILURE DURING HOVER TAXI. REMOVED AND REPLACED #1 AHRU IAW AMM 34-22-00, 4-1. FUNCTIONAL TEST AND TEST PILOT MOC SUCCESSFULLY COMPLETED.

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