# SDR 98ZZZX4189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Lufthansa Technik Engine Services, Inc, repair station IY2R915K](https://openairdocs.org/faa-repair-station/IY2R915K/lufthansa-technik-engine-services-inc.md) (OpenAirDocs)
- Aircraft: N28MJ
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 224
- Engine: Garrtt TFE73122B
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Blade
- Part number: 30727121
- Condition: Failed
- Location: Turbine
- Part time: 3,513 hours
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX4189

## Discrepancy

DURING CRUISE, NR 2 ENGINE EXPERIENCED A RAPID RISE IN INTERSTAGE TURBINE TEMPERATURE (ITT) AND VIBRATION LEVEL.  THRUST WAS REDUCED TO IDLE.  A SAFE LANDING WAS MADE AT NEW ORLEANS INTERNATIONAL AIRPORT (MSY).  ENGINE WAS REMOVED FROM AIRCRAFT FOR INVESTIGATION AND REPAIR.  DISASSEMBLY REVEALED STRESS RUPTURE TO ONE HIGH PRESSURE TURBINE BLADE, P/N 3072712-1.  SECONDARY DOMESTIC OBJECT DAMAGE WAS CONTAINED.

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