# SDR UIEA2016121200997

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2016
- Submitted: December 16, 2016
- Operation: Air carrier
- Aircraft: [N263SG](https://openairdocs.org/aircraft/N263SG), registered now
- Make and model: Boeing 747481
- Aircraft serial: 29263
- Aircraft time: 50,065 hours, 6,117 cycles
- Engine: Ge CF680C2B5F
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Failed
- Location: Nr 4
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: E, J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2016121200997

## Discrepancy

AFTER TAKE OFF, AND DURING LANDING GEAR RETRACTION.  A LIGHT AIRFRAME VIBRATION AND RIGHT YAW WAS OBSERVED. SHORTLY AFTER, NR 4 ENGINE N1 EXCEEDENCE WAS OBSERVED, PERFORMED PRECAUTIONARY NR 4 ENGINE SEVERE DAMAGE CHECKLIST.  FOUND ENGINE AT FAULT, REMOVED AND REPLACED THE NR 4 ENGINE IAW AMM 71-00-00.  OPS CHECKED SATISFACTORY.

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