# SDR 2025FA0000230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2025
- Submitted: April 2, 2025
- Operation: General aviation
- Filed by: [GE Aircraft Engine Services Ltd, repair station QEMY466L](https://openairdocs.org/faa-repair-station/QEMY466L/ge-aircraft-engine-services-ltd.md) (OpenAirDocs)
- Aircraft: [N446L](https://openairdocs.org/aircraft/N446L), registered now
- Engine: Ge GE90115B
- Engine time: 30,925 hours, 4,422 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Seal
- Part number: 2505M72P01
- Part serial: NCU61244
- Condition: Worn
- Location: Hpt
- Part time: 30,925 hours, 4,422 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/2025FA0000230

## Discrepancy

DURING INCOMING INSPECTION AT GE WALES, A DEFECT ON THE SEAL-INTERSTAGE HPT ROTOR (HPTR) HAS BEEN NOTED. THE HPTR INTERSTAGE SEAL EXHIBITS 1 AREA OF WEAR (CONSISTING OF 5 INDIVIDUAL SPOTS OF WEAR, GROUPED INTO 4 LOCATIONS) TO THE FILLET BETWEEN THE STG 2 DISK INTERFACE/AFT RABBET, TO A MAXIMUM DEPTH OF 0.004 INCH. THIS IS A KNOWN SERVICE RUN CONDITION.  DR #02158237 REJECTED BY THE OEM.  TO BE REPORTED IN LINE WITH MANDATORY REPORTING REQUIREMENT 145 AMC 20-8A (J) ANY DEFECT IN A LIFE-CONTROLLED CRITICAL PART THAT CAUSES ITS RETIREMENT BEFORE THE COMPLETION OF ITS FULL SERVICE LIFE.

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