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Old 11-08-2020, 03:05 PM
Join Date: Jul 2004
Location: White Bear lake, MN
Posts: 420
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Received 27 Likes on 27 Posts

Some engines will continue to run if fully choked. A simple switch on the plane would work, but is less accessible than a control on the TX, etc. "Mandatory" was meant to emphasis it being a best practice for safety, not to claim there was a requirement by a higher authority....