# SDR 9709729855

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N764NC
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 47717
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Condition: Inoperative
- Location: Nr 2
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9709729855

## Discrepancy

AUTO-PILOT OSCILLATES IN CLIMB.  AIRSPEED HOLD AND MACH HOLD INOPERATIVE.  FLIGHT RETUNED TO PHX AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED NR 2 ADC AND LEAK CHECKED PER MM 34-10-0, OPERATIONAL CHECK OK.

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