n. A conspiracy theorist who believes that no planes were involved in the terrorist attacks of September 11, 2001.
2011
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.
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.
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.