Claim: Frank Irving was a British aeronautical engineer, glider pilot which is a recreational activity and competitive air sport.
Evidence: Frank Irving (7 April 1925 – August 2005) was a British aeronautical engineer, glider pilot, author and university lecturer. Gliding is a recreational activity and competitive air sport in which pilots fly unpowered aircraft known as gliders or sailplanes using naturally occurring currents of rising air in the atmosphere to remain airborne.