# SDR ABXA20241202240

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2024
- Submitted: December 2, 2024
- Operation: Air carrier
- Aircraft: [N391CM](https://openairdocs.org/aircraft/N391CM), registered now
- Make and model: Boeing 767381
- Aircraft serial: 32975
- Aircraft time: 57,328 hours, 23,401 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Transponder
- Condition: Faulted
- Location: Zone 100
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA20241202240

## Discrepancy

DURING TAXI OUT ATC WAS UNABLE TO RECEIVE TRANSPONDER . AC RETURNED TO THE GATE (BTB) AND MTX GROUNDED AC . MTX PERFORMED A SYSTEM TEST OF THE TCAS SYSTEM AND ATC WAS ABLE TO PICK UP THE IDENT, IAW B 767 AMM 34-45-00. NO FURTHER DEFECTS NOTETED . MTX RETURNED AC TO SERVICE .

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