GalaxyFlyer wrote:Useful only if you couldn’t use hot air or boots. Mooneys used it for that reason. The Hawker had TKS because it needed every bit of thrust without adding on bleeds. I think the tank could be refilled in-flight. (“Excuse me, may I have your martini?”)
Edit: the Citation SII had TKS, IIRC, for the same reasons and boots were considered déclassé.
GalaxyFlyer wrote:The original Vipers were the real drivers here, while potentially 731s would have allowed the 125 -400, designing new heated wings might have been cost prohibitive.
As to boots, I flew Citations for 4 years and 2,400 hours in the US Northeast and the boots weren’t that often used, cowls were heated. I just never saw that much ice buildup. Now, flying Barons and Aztecs thru a New England winter were a whole ‘nother story.
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