# SDR QR9R20211119001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2021
- Submitted: November 19, 2021
- 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: 06720019098
- Aircraft time: 3,106 hours
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Altimeter
- Part number: 3A413220F284EP
- Part serial: 1070851
- Condition: Inaccurate
- 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/QR9R20211119001

## Discrepancy

ALTIMETER READS 1020' @ 29.92 IN/HG, AIRFIELD ELEVATION IS 301'. ADDITIONALLY, ADJUSTMENT KNOB DOES NOT HAVE A SMOOTH ROTATION. FEELS LIKE A SLIGHT DETENT IN PART OF THE ROTATION.

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