# SDR DXTA200500783

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2005
- Submitted: June 24, 2005
- Operation: Air carrier
- Aircraft: [N971QS](https://openairdocs.org/aircraft/N971QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500071
- Aircraft time: 5,621 hours, 3,547 cycles
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 701730031444
- Part serial: 02082624
- Condition: Malfunctioned
- Location: Autopilot
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200500783

## Discrepancy

NR 1 IAC FAILED IN FLIGHT, DU 1, 2, 3, RED X THROUGH SCREENS, NR 1 FMS INOP, NR 1 RMU STILL WORKS, NO HEADING BUG OR ALTITUDE SETTING CAPABILITY EITHER.  REMOVED AND REPLACED HONEYWELL PRIMUS 2000 IC800 WITH A REPAIRED UNIT FROM HONEYWELL NR LV2R992K S/N ON : 96070577 IAW CESSNA 750 M/M 34-25-01. FUNCTION CHECKED SYSTEM IAW CESSNA 750 M/M 23-80-01. CHECKS GOOD.

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