# SDR Z3KY20141031001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2014
- Submitted: October 31, 2014
- Operation: General aviation
- Filed by: [Taikoo Engine Services (Xiamen) Company Limited, repair station Z3KY526B](https://openairdocs.org/faa-repair-station/Z3KY526B/taikoo-engine-services-xiamen-company-limited.md) (OpenAirDocs)
- Make and model: Boeing 777*
- Engine: Ge GE90115B
- Engine time: 31,246 hours, 4,203 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Seal
- Part number: 1865M19P02
- Part serial: NCE483CK
- Condition: Failed
- Location: Turbine
- Part time: 31,246 hours, 4,203 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Z3KY20141031001

## Discrepancy

HIGH PRESSURE TURBINE ROTOR FORWARD SEAL RADIAL CRACK, LENGTH=160MM, WIDTH=1MM, DEPTH=35MM.  DEFECT IDENTIFIED DURING ENGINE DISASSEMBLY AND IMMEDIATELY REPORTED TO THE ENGINE OEM.  OEM HAS PREVIOUSLY INITIATED FAA NOTIFICATION AND DEFECT INVESTIGATION IS ON-GOING.  REFER TO OEM FDM CORRESPONDENCE NR GE90115B-13-005.

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