A player of the popular online military simulator War Thunder has been banned from the game’s official forums after sharing a page from a restricted AV-8B Harrier flight manual. The incident marks at least the ninth known case in which classified or export-controlled material has been posted by users attempting to influence in-game accuracy.

In this latest case, a user uploaded a section from a NATOPS manual for the AV-8B and TAV-8B Harrier, used by the United States Navy and Marine Corps. The manual is marked “Distribution Statement C,” which means it is not approved for public release and is restricted to authorised U.S. government personnel and contractors. War Thunder’s community manager confirmed the document breached the forum’s rules and was removed immediately. The user received a temporary ban.

This is the latest in a growing list of similar incidents. Previous leaks involved documentation for the UK’s Challenger 2 main battle tank, France’s Leclerc, China’s ZTZ-99, the Eurocopter Tiger, and several U.S. aircraft including the F-16, F-15E, F-117, and most recently, the Eurofighter Typhoon. Each case followed a similar pattern: a user attempted to support a technical argument by uploading documents that were either classified or export restricted. Each time, moderators deleted the posts and sanctioned the accounts involved.