# SDR GTIA020729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2002
- Submitted: August 29, 2002
- Operation: Air carrier
- Aircraft: N808NK
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49504
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Computer
- Part number: 4034241972
- Part serial: 87081376
- Condition: Malfunctioned
- Location: Cockpit
- Part time: 3,819 hours, 1,643 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA020729

## Discrepancy

LGA - FLT 706 - WITH DFGC SELECTED TO POSITION 2 WHEN MACH VERTICAL SPEED SELECTED WILL NOT ENGAGE MACH BUT REMAINS IN IAS WHEN DFGC NR 1 SELECTED WORKS FINE.  REMOVED AND REPLACED DFGC PER MD80 MM 22-01-01, SYSTEM OPS CHECK GOOD.  (M)

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