# SDR IPXA2014070283487

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 2014
- Submitted: July 7, 2014
- Operation: Air carrier
- Aircraft: [N257UP](https://openairdocs.org/aircraft/N257UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48451
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Computer
- Condition: Malfunctioned
- Location: Airspeed Indicat
- 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/IPXA2014070283487

## Discrepancy

FIRST OFFICER`S AIRSPEED ROLLED BACK.  RECEIVED ALERTS, SEL FADEC ALT, ELEVATOR FEEL MANUAL, FLAP LIMIT OVERRIDE, F/O AIRSPEED UNRELIABLE, WINDSHEAR DETECT FAIL.  RETURNED TO DEPARTURE.  LANDED UNEVENTFULLY.  R & R NR 2 CADC. OPS CHECKED OK IAW AMM 34-16-01.

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