# SDR GTIA011016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 19, 2001
- Submitted: December 4, 2001
- Operation: Air carrier
- Aircraft: N969ML
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47268
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 2587400436
- Part serial: 0481033
- 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/GTIA011016

## Discrepancy

MYR - FLT 619 - WHEN AUTOPILOT IN VERTICAL SPEED MODE AIRCRAFT CLIMBS 500 FPM MORE THAN SELECTED AND DESCENDS 500 FPM LESS THAN SELECTED.  REMOVED AND REPLACED NR 1 ADC, OPS CHECK GOOD.  (M)

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