# SDR QR9R2026072700001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2026
- Submitted: July 27, 2026
- 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: 9692
- Aircraft time: 5,139 hours
- System (JASC): [3444 · Ground Proximity System](https://openairdocs.org/jasc/3444)
- Part: Altimeter
- Part number: 066011530101
- Part serial: KRA405B17266
- Condition: Inoperative
- Location: Radar Alt
- Stage of operation: TX
- 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/QR9R2026072700001

## Discrepancy

DURING RUN-UP, RADAR ALTIMETER FOUND TO BE INOPERATIVE READING 600' ON THE PAD.  REMOVED AND REPLACED RADAR ALTIMETER IAW BK117 C-2 COM-NAV 34-41-01. MOC SUCCESSFULLY COMPLETED.

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