# SDR 99ZZZX2904

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- System (JASC): [7922 · Engine Oil Temperature Regulator](https://openairdocs.org/jasc/7922)
- Part: Thermo Valve
- Part number: S3E1960
- Condition: Damaged
- Location: Engine
- Part time: 1,500 hours
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2904

## Discrepancy

THERMOSTAT VERY NEAR FAILING WITH POSSIBLE SEVERE ENGINE DAMAGE RESULTING.  SEAT RETAINING NUT VERY LOOSE ON STEM.  NUT WAS 'JUMPED' 2 THREADS.  THIS PART NUMBER AND SERIAL NUMBER SUBJECT TO LYC BULLETIN SIBC AND SI'S 1, 2, AND 3.  SUBMITTER STATED THIS INSPECTION AND REWORK HAD NOT BEEN COMPLIED WITH.

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