# SDR QR9R2023080800001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2023
- Submitted: August 8, 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: 18724189803
- Aircraft time: 3,307 hours
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Gcu
- Part number: 51530022
- Part serial: P5955
- Condition: Faulty
- Location: Unknown
- 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/QR9R2023080800001

## Discrepancy

#2 GENERATOR OFFLINE NO AMPS. DURING TROUBLESHOOTING WITH TESTFLIGHT, FOUND #2 GCU TO BE FAULTY (CONFIRMED WITH CROSS-OVER CABLES). REMOVED AND REPLACED #2 GCU IAW AMM 24-30-00, 4-1.

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