A Supplemental Type Certificate (STC) is an FAA approval for significant modifications to an aircraft's original design, ensuring safety and airworthiness. FAA approval of an STC does not ...
CubCrafters, the Yakima, Washington-based builder of popular backcountry aircraft, has received an FAA Supplemental Type Certificate (STC) to increase the gross weight of the Piper PA-18 Super Cub to ...
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