# SDR UIEA200400179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2004
- Submitted: November 12, 2004
- Operation: Air carrier
- Aircraft: [N808MC](https://openairdocs.org/aircraft/N808MC), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21048
- Engine: Ge CF650E2
- System (JASC): [3410 · Flight Environment Data](https://openairdocs.org/jasc/3410)
- Part: Inu
- Part number: 46300181300413
- Part serial: 1387
- Condition: Failed
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200400179

## Discrepancy

ON CLIMB OUT, NR 1 INS WARNING LIGHT CAME ON.  ON CLIMB OUT NR 1 INS WARNING LIGHT CAME ON.  NR 1 ADI AND HEADING FAILED.  SELECTED NR 3 ATTITUDE AND COMPASS.  APPROX 3 MINUTES LATER NR 3 INS WARNING LIGHT CAME ON.  BOTH SCREENS WENT BLANK AND SHUT DOWN.  REMOVED AND REPLACED NR 1 AND NR 3 INS NAVIGATION UNIT IAW MM 34-41-03/ 401 AND 501.  OPS CHECK OK.

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