# SDR 2005FA0000567

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2005
- Submitted: April 26, 2005
- Operation: General aviation
- Make and model: Boeing 777*
- Aircraft serial: PPVRC2
- Engine: Ge GE9090B
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Seal
- Part number: 1847M96P02
- Part serial: GWN00JE0
- Condition: Cracked
- Location: Hpt Rotor
- Part time: 11,868 hours
- Component: Hpt Rotor, Ge
- Component part number: 1975M57601
- 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/2005FA0000567

## Discrepancy

MDR/001/05: DURING ENG O/H, 2 CRACKS WERE NOTED ING THE HPT INTERSTAGE SEAL.  CRACKS ARE ABOUT 45 DEGREES APART AND APPEAR TO ORIGINATE IN THE FWD ARM, OUTER DIAMETER.  BOTH CRACKS ARE THROUGH FORWARD RETAINER AND CATENARY.   1 PASSES THROUGH BOTH SEAL TEETH AND THE OTHER HAS STARTED DOWN THE SEAL WEB. (K)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.