# SDR VNAA2026081722701

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2026
- Submitted: August 17, 2026
- Operation: Air carrier
- Aircraft: [N636NN](https://openairdocs.org/aircraft/N636NN), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15399
- Aircraft time: 16,097 hours, 16,131 cycles
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Zone 200
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA2026081722701

## Discrepancy

DC EMERGENCY BUS CAUTION IN FLIGHT,  FOUND CB R11 ON CBP-1 OPEN ON ARRIVAL. CLOSED CB AND FAULT EXTINGUISHED. PERFORMED OPS TEST OF THE DC POWER SUPPLY BUSES IAW AMM 24-61-00-710-801 AND FIM 24-31-00-810-803. OPS TEST GOOD. T/S DC EMER BUS CAUTION PER FIM 24-31-00-810-803 AND AMM 24-61-00-710-801. ONLY ABLE TO DUPLICATE MSG BY PULLING BUS POWER SENSE CB1-R11 WHICH WAS NOTED AS POPPED.  BREAKER REMAINED SET DURING FIM T/S AND AMM CHECKS.  DC EMER BUS CHECKS GOOD.

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