# SDR CA011101021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2001
- Submitted: December 12, 2001
- Operation: Air carrier
- Make and model: Airbus A310-304
- Registry model: [Airbus A310-304](https://openairdocs.org/model/airbus-industrie-a310-304) (OpenAirDocs)
- Aircraft time: 29,137 hours
- Engine: Ge CF680C2*
- System (JASC): [2450 · AC Power Distribution System](https://openairdocs.org/jasc/2450)
- Part: Circuit Breaker
- Part number: SP4677033A
- Condition: Failed
- Location: Cb Panel
- Stage of operation: TO
- How discovered: O
- Nature of condition: B
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA011101021

## Discrepancy

(CAN) 1. ON TAKEOFF, FLIGHT CREW HEARD CB'S POP WITH SMELL OF BURNING PLASTIC.2. EMERGENCY DECLARED & AIRCRAFT RETURNED TO YYZ. AIRCRAFT LANDED WITHOUT INCIDENT. 3. UPON INSPECTION CB'S J71J74 & K73 WERE FOUND POPPED WITH VISIBLE SIGNS OF ARCING. ALL CB'S REPLACED & RELECTED SYSTEMS CHECKED SERVICEABLE IAW TSM 24-00-00. 4. NO FURTHER INCIDENT DURING SUBSEQUENT FLIGHT.

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