# SDR UIEA200800299

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2008
- Submitted: October 8, 2008
- Operation: Air carrier
- Aircraft: [N517MC](https://openairdocs.org/aircraft/N517MC), registered now
- Make and model: Boeing 747243B
- Aircraft serial: 23300
- System (JASC): [3441 · Inertial Guidance System](https://openairdocs.org/jasc/3441)
- Part: Inu
- Part number: 46300161300413
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200800299

## Discrepancy

AIR TURN BACK, DURING CLIMBOUT BOTH INST WARNING LIGHTS WITH ATT LIGHT ILLUMINATED. CAPT`S ADI ATT AND COMPAS FLAG IN VIEW.  CAPTS HSI HDG, FLAG IN VIEW.   REMOVED AND REPLACED NR 1 INU IAW 34-41-03. COOLING SYSTEM TESTED OK AND INS NAV TEST OK.  (K)

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