# SDR UIEA200700361

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2007
- Submitted: September 24, 2007
- Operation: Air carrier
- Aircraft: [N409MC](https://openairdocs.org/aircraft/N409MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30558
- Aircraft time: 29,729 hours, 4,614 cycles
- Engine: Ge CF680C2*
- Engine time: 38,758 hours, 4,671 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Blades
- Part number: 1538M90P12
- Part serial: VARIOUS
- Condition: Cracked
- Location: Hpt Rotor
- Part time: 17,179 hours, 2,668 cycles
- Component: Rotor, Ge
- Component part number: 9255M20G02
- 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/UIEA200700361

## Discrepancy

ESN 704892 - HPT STAGE 1 BLADES AND STAGE 2 BLADES FOUND WITH UNDER PLATEFORM CORROSION AND CRACKS.  STAGE 1 P/N 1538M90P12 (80EA) STAGE 2 P/N 1881M52G05 (74EA).

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