# SDR MEX2004010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2004
- Submitted: January 20, 2004
- Operation: Air carrier
- Aircraft: N168PL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53174
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Computer
- Part number: HG280D80
- Part serial: 00422939003227
- Condition: Failed
- Location: Pos 1,Pos 2
- Part time: 3,221 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MEX2004010

## Discrepancy

AIRCRAFT RETURNED TO PLATFORM DURING TAKE OFF LT SPEED INDICATOR HAD 80 KNTS AND RT SPEED INDICATOR HAD 65 KNTS.  DURING REVISION WERE DETECTED CADC NR 2 WITH FAILURE IN CDUS, RT SPEED INDICATOR FLAG AND FAST/SLOW FUNCTION IN RT PFD WITH FAILURE.  CADC NR 2 WAS TESTED IAW MM 34-11, CONNECTION LINES AND PITOT TUBE AND STATIC PORT WERE CLEANED, ALL TEST CORRECT.  BOTH CADC WERE REPLACED, ALL CORRECT.

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