The FlyEco “smart diesel” engine from Europe attracted plenty of attention at Aero Friedrichshafen in Germany. We visited with the designer of the engine as asked him numerous questions we though you might ask. Please bear with the audio amid the chatter of many visitors and keep in mind that English is not his native language. We helped by repeating and translating some metric to U.S. measurements.
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What is the maximum operating altitude of the Fly-Eco “smart diesel” engine?
By all means contact the developer to ask directly.