The Whispercutter was a type of light transport aircraft once used solely by the Raven Guard Legion during the latter days of the Great Crusade and the Horus Heresy in the late 30th and early 31st Millennia. Constructed on Kiavahr, the Whispercutter is an open-topped air-frame flyer that uses gravitic impellers for propulsion and was capable of dropping up to ten Astartes into a war zone in utter silence and with practically no chance of detection.