# SDR CA960712103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Airbus A310-300
- Registry model: [Airbus A310-300](https://openairdocs.org/model/airbus-industrie-a310-300) (OpenAirDocs)
- System (JASC): [3445 · Air Collision Avoidance System](https://openairdocs.org/jasc/3445)
- Part: Transponder
- Condition: Malfunction
- Location: Tcas Sys
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA960712103

## Discrepancy

(CAN) WHILE VMC AT FL350 IN LEVEL FLIGHT NEAR THE AUTUN VOR, AIRCRAFT EXPERIENCED AT FULL TCAS ADVISORY & RESOLUTION. FIRST A TARGET DISPLAYED ON THE IVSI AT THE 2-3 O'CLOCK POSITION AT 2-3 NM RANGE AT THE SAME ALTITUDE, ACCOMPANIED BY AN AURAL WARNING. APPROXIMATELY 2 SECONDS LATER THE IVSI/TCAS LIT UP RED DIRECTING A CLIMB ACCOMPANIED WITH AN AURAL CLIMB COMMAND. VISUAL CONFIRMATION COMBINED WITH UNREALISTIC SPEED OF THE WARNING SEQUENCE LED CREW TO SUSPECT VALIDITY OF WARNING. THIS INCIDENT OCCURRED IN IMC CONDITIONS & WAS BELIEVED AT THE TIME TO BE A NEAR MISS. THE TCAS AND TRANSPONDER COMPUTERS WERE REPLACED AND ARE BEING EVALUATED.

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