# SDR CA990202004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Engine: Cont TSIO520VB
- Propeller: Mcauly 3AF32C505
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Oil Cooler
- Part number: 649479
- Condition: Failed
- Location: Engine
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990202004

## Discrepancy

(CAN) OIL COOLER (P/N 649479) WAS DELIVERED AND INSTALLED WITH AN OVERHAULED ENGINE.  AS WINTER APPROACHED THE ENGINE OIL TEMPERATURE, DURING CRUISE, BEGAN TO DROP.  WITH AMBIENT AIR TEMPERATURE -20 DEGREES CELSIUS, THE ENGINE OIL TEMPERATURE WAS BELOW THE BOTTOM OF THE GREEN ARC, ON THE COCKPIT GAUGE. ORIGINAL EQUIPMENT OIL COOLER (HARRISON P/N 636900R). REPLACED CONTINENTAL COOLER AND THE PROBLEM WENT AWAY.

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