Special VFR Flight : A VFR flight cleared by an ATC unit to operate within controlled airspace in meteorological conditions below visual meteorological conditions
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}