# SDR AWXA200200787

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2002
- Submitted: August 22, 2002
- Operation: Air carrier
- Aircraft: [N324AW](https://openairdocs.org/aircraft/N324AW), registered now
- Make and model: Boeing 737301
- Aircraft serial: 23261
- Aircraft time: 54,566 hours, 34,867 cycles
- Engine time: 0 hours, 0 cycles
- System (JASC): [3441 · Inertial Guidance System](https://openairdocs.org/jasc/3441)
- Part: Iru
- Part number: HG1050AD04
- Part serial: 161601
- Condition: Failed
- Location: Zone 100 - Fusel
- Part time: 54,149 hours, 27,735 cycles
- Stage of operation: CL
- Nature of condition: J, S
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA200200787

## Discrepancy

PHX - AIR TURN BACK - FLT 0646 - ON CLIMB FROM PHX EN ROUTE FOR ONT THE #2 INERTIAL REFERENCE SYSTEM LIGHT ILLUMINATED, DUE TO WEATHER AT ONT AIRCRAFT TURNED BACK TO PHX. MAINTENANCE REMOVED AND REPLACED THE #2 INERTIAL REFERENCE UNIT, FUNCTIONAL CHECK OF NEW UNIT WAS GOOD.

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