Hi we are a flying school in Chile and we have 3 Bristell NG5 in operation with 912ULS we have experience an engine fail after take off and we found that the drain valve of the gascolator was opened, does someone know how this affect the engine and how can i demonstrate it without doing the take off with the drain valve open?



7617_1_Opened_Position_2.JPG (You do not have access to download this file.)
  • Re: Gascolector drain valve

    by » 8 months ago

    It should NOT affect the running of the engine unless it emptied the tank.  Fuel Starvation!

    It will, however, leave a large growing puddle of gas on the ground.

    Which begs the question, "How could this have been missed?"

    Was the Fuel Tank Empty?


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated.

    Thank you said by: Cristian

  • Re: Gascolector drain valve

    by » 8 months ago

    Thanks Bill, this was the first fly of the day and the pilot drain the gascolator with the fuel selector valve off. During taxi and run up everything was OK. But after take off (maybe 50 ft) the engine failures occurs. We saw a video after the aircraft start the taxi and we saw a fuel stain in the ground. Also we found the drain valve open, we inspect the engine and everything is OK. We only wanted to know why the engine fail happened, so that this does not happen again. 

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