# SDR IPXA1M64996

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2011
- Submitted: February 28, 2011
- Operation: Air carrier
- Aircraft: [N291UP](https://openairdocs.org/aircraft/N291UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Cadc
- Part number: 4059060
- Part serial: 92040459
- Condition: Inoperative
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA1M64996

## Discrepancy

ON TAKEOFF PASSING 1,000 FT HAS SIMULTANEOUS IAS AND ALT COMPARITOR LIGHTS; LOSS OF IAS AND ALT DISPLAYS ON FLT CONTROL PANEL.  AUTO THROTTLES WENT OT MAX PWR AND NUMEROUS LVL 1 ALERTS CAPT SELECTED CADC ON HIS EIS PANEL.  REPLACED NR 1 CADC IAW MM 34-16-01-4.  OPS CHECK GOOD AT THIS TIME.

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