Quote:
Originally Posted by Moggy
Is that in case the pilot fail to report using the boost klem?
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As a 'tell tale' the ground crew would know it had been used. I'm fairly sure I have read of that being the case but I would have to trawl through about 20 autobiographies
This page
http://www.spitfireperformance.com/spit1vrs109e.html
refers to 'breaking the wire' but I can't put my hand on definitive data.