# SDR IPXA2018070231232

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2018
- Submitted: July 2, 2018
- Operation: Air carrier
- Aircraft: [N255UP](https://openairdocs.org/aircraft/N255UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48404
- Aircraft time: 84,135 hours, 17,510 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Cadc
- Condition: Failed
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2018070231232

## Discrepancy

ATB, CADC 1 FAIL -ALT COMP, W/S DET FAIL, FCP ALT WINDOW BLANK, UNABLE TO HOLD ALTITUDE. REPLACED NR 1 CADC COMP IAW AMM 34-16-01-400-801. GROUND OPS CHECK GOOD. INSP PITOT/ STATIC LINES, CHECKED CADC RACK CONNECTORS NDN.

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