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KAVLICO Sensor SB

 
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GalinHdz



Joined: 08 Nov 2017
Posts: 147

PostPosted: Wed May 06, 2020 5:44 pm    Post subject: KAVLICO Sensor SB Reply with quote

Dynon, AFS and other EFIS manufacturers have issued a Service Bulletin (SB) concerning KAVLICO pressure sensors. This issue affects the engine sensor(s) that are used in many other applications within Experimental aviation.

"Since 2012, Dynon has supplied Kavlico fluid pressure sensors for use with its engine monitoring products. These sensors are primarily used to monitor oil, fuel, and coolant pressure. Dynon has received rare sensor failure reports that involve fluid leakage. Reports include both drips and sprays of fuel and oil. Dynon has not received any reports of fuel exhaustion, oil exhaustion, or fires associated with the reported failures. Based on review of the sales and fleet data, the likelihood of this condition occurring is remote. 
https://dynonavionics.com/bulletins/support_bulletin_050620E.php 


Dynon Recommendation: Aircraft owners/operators should consider taking advantage of this product improvement. Dynon does not specify a timeframe in which such replacement should be performed.



Immediate Action: Ensure pressure sensors are installed in accordance with guidance in the installation documentation. Do not mount sensors directly to the engine or other sources of high vibration. Utilize inline fittings that incorporate a flow restrictor to prevent rapid discharge of fluids in the event of a failure of any component, including the sensor.


Preventive Action: Monitor engine compartment for possible fluid leaks originating at the pressure sensors. If installing new fluid pressure sensors, use the updated sensors. Other preventive actions that could be considered include isolating possible leak sources from sources of ignition. Such sources include, but are not limited to, fluid junctions, fittings, hoses, and fluid pressure sensors.


Corrective Action:If any signs of fluid leaks (including trace amounts of residual fluid) are detected.
     Notify Dynon Technical Support of the failure. If able, please, retrieve and submit diagnostic data to Dynon as soon as practicable after the event. Do not perform this action in flight.
     Replace the fluid pressure sensor with a new sensor immediately. Always refer to installation guidance when installing new sensors."


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