# SDR GTIA020629

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2002
- Submitted: July 25, 2002
- Operation: Air carrier
- Aircraft: [N810NK](https://openairdocs.org/aircraft/N810NK), registered now
- 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: 48015
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Computer
- Part number: 4034241972
- Part serial: 83060623
- Condition: Inoperative
- Location: Nr 1
- Part time: 15,351 hours, 678 cycles
- Stage of operation: DE
- 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/GTIA020629

## Discrepancy

ACY - FLT 259 - AUTO PILOT DOES NOT HOLD SELECTED VERTICAL SPD IN VERTICAL SPPED MODE OR SELECTED IAS MODE WHEN DESCENDING.  FOUND INOPERATIVE DFGC COMPUTER NR 1 REMOVED AND REPLACED DFGC NR 1 AND RAN RETURN TO SERVICE TEST NO FAULT NOTED CHECKED GOOD.  (M)

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