# SDR GTIA020273

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2002
- Submitted: May 1, 2002
- Operation: Air carrier
- Aircraft: [N12536](https://openairdocs.org/aircraft/N12536), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47113
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 2587400436
- Part serial: 0681132
- Condition: Faulty
- Location: E/E Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA020273

## Discrepancy

FLT 616 - ACY - AUTO PILOT PITCH CONTROL PORPOISES DURING CLIMB AND DESCENTS AND WILL NOT HOLD ALTITUDE ALL OTHER FUNCTIONS OK FLT 616.  REMOVED AND REPLACED AIR DATA COMPUTER PERFORMED PITOT STATIC LEAK CHECK.  GROUND CHECK OK AT THIS TIME.  (M)

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