no planer
n. A conspiracy theorist who believes that no planes were involved in the terrorist attacks of September 11, 2001.
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But in 2005, Haupt started preaching a theory, referred to disparagingly by other conspiracists as the "no-planer" hypothesis, that the footage of jetliners hitting the WTC seen live on TV that morning was actually of holograms.
—Jeremy Stahl, “You're Not Paranoid if It's True,” Slate, September 07, 2011
David Shayler had become part of a rare and extreme faction of the 9/11 truth movement—a "no planer"—and journalists who would normally find the movement a little too dry to cover were suddenly entranced.
—Jon Ronson, The Psychopath Test, Riverhead, May 12, 2011
2004 (earliest)
Contrary to the no-planer's claims, and despite the blurring, the components of the airplane can be discerned in the high quality movie…The no-planers have claimed the above piece of fuselage is planted evidence because it is not burned.
—Eric Salter, “The WTC Impacts: 767s or 'Whatzits'?,”, May 11, 2004