# SDR 96ZZZX1719

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [National Flight Services Inc, repair station DSCR311D](https://openairdocs.org/faa-repair-station/DSCR311D/national-flight-services-inc.md) (OpenAirDocs)
- Engine: Garrtt TPE33112UHR
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Seal
- Part number: 31038393
- Condition: Flange Cracked
- Location: Turb 1st Stage
- Part time: 3,556 hours
- Component: 31033155
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX1719

## Discrepancy

DURING SCHEDULED INSPECTION, FOUND SEAL CRACKED AT FLANGE.  SB 72-0840 AUTHORIZES INSTALLATION OF THIS PART TO PROVIDE INCREASED TENSION AGAINST THE FIRST STAGE ROTOR.  THIS INCREASED TENSION RESULTS IN CRACKING AT THE SEAL FLANGE.  SUBMITTER STATED THIS IS A CRITICAL LIFE-LIMITED COMPONENT.  LIFE LIMIT - 20,000 CYCLES.  THIS IS THE 13TH SEAL FOUND CRACKED.  TOTAL CYCLES, 3,550.

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