# SDR IPXA2016092108519

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2016
- Submitted: September 21, 2016
- Operation: Air carrier
- Aircraft: N270UP
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48576
- Aircraft time: 55,207 hours, 14,469 cycles
- System (JASC): [3446 · Non Radar Weather System](https://openairdocs.org/jasc/3446)
- Part: Coax
- Condition: Failed
- Location: Tcas
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2016092108519

## Discrepancy

SHORTLY AFTER TAKEOFF, TCAS FAILED. RETURNED TO DEPARTURE.    REPLACED BOTH J2 AND J4 COAX CABLES.  TCAS OPS CHECK GOOD.

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