# SDR QR9R2025070300001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2025
- Submitted: July 3, 2025
- Operation: General aviation
- Filed by: [M1 Support Services, repair station QR9R369D](https://openairdocs.org/faa-repair-station/QR9R369D/m1-support-services.md) (OpenAirDocs)
- Make and model: Bolkms BK117C2
- Aircraft serial: 9807
- Aircraft time: 3,689 hours
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Air Data Module
- Part number: C17133AA01
- Part serial: 7498
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: TX
- How discovered: O
- Nature of condition: F
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2025070300001

## Discrepancy

VAR NR INOPERATIVE DURING START RUN-UP. REMOVED AND REPLACED AIR DATA UNIT IAW AMM 34-11-00, 4-1. TEST FLIGHT COMPLETED IAW MSM 05-60-00,6-1, CHECKS OK.

---
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.