# SDR QR9R2023081500002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2023
- Submitted: August 15, 2023
- 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: 19724399825
- Aircraft time: 2,257 hours
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Indicator
- Part number: 501184501
- Part serial: 80193
- Condition: Failed
- Location: Unknown
- 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/QR9R2023081500002

## Discrepancy

DURING PREFLIGHT, STANDBY ATTITUDE INDICATOR FAILED TO POWER UP. REMOVED AND REPLACED STANDBY HORIZON IAW AMM 34-24-00, 4-1; MOC SUCCESSFULLY COMPLETED.

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