# SDR GTIA050161

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2005
- Submitted: July 25, 2005
- Operation: Air carrier
- Aircraft: N811NK
- Make and model: Doug DC-9-81(MD-81)
- Registry model: [Doug DC-9-81(MD-81)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81) (OpenAirDocs)
- Aircraft serial: 48017
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Cadc
- Condition: Failed
- Location: Nr 2
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA050161

## Discrepancy

CLIMBING THROUGH FL260 LOST ALL AUTO FLIGHT PARAMETERS, F/O ALT WAS 300 FT OFF, NO ALTITUDE ALERT.  PASS THROUGH 250 DESCENT EVERYTHING STARTED TO COME BACK BUT WOULDN’T STAY ON, NO C/B`S POPPED, NO ANNUNCIATORS.  AIR RETURN BACK TO DTA, AIRCRAFT TAIL SWAP WITH N804NK.  REMOVED AND REPLACED NR 2 CADC.  OPS CHECK GOOD.  RTS AND AUTOLAND CHECKS OK.  (M)

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