Karl Gall riding for BMW crashes at Ballaugh Bridge during practice and later dies of his injuries and the effects of pneumonia in hospital.
A collision occurs on Bray Hill during lap 2 of the 1939 Junior TT Races when Sven A. Sorenson riding an Excelsior collides with H. B. Waddington and David Whitworth both riding Norton motor-cycles.
On lap 1 of the 1939 Junior TT Race, Bob Foster riding an AJS stops at the Quarterbridge to fix broken goggles. Also, Bill Beevers and H.B.Myers both riding Velocette motor-cycles crash at the Quarterbridge on the same lap.
During lap 3 of the Junior Race, Tyrell Smith slips of his Excelsior motor-cycle at Parliament Square in Ramsey and then continues after straightening the foot-rest. At the East Mountain Gate during lap 5, Marcel Simo collides with a post and crashes his Terrot motor-cycle. He suffers head and chest injuries and is taken to hospital. Also during lap 5, Freddie Frith retires at Ballaugh after holding 2nd place in the 1939 Junior TT Race.
The 1939 Lightweight Race is held in mixed weather conditions. On lap 2 of the Lightweight Race, Jock McCredie riding an Excelsior retires at Ballaugh with engine problems. Lap 3 and Omobono Tenni riding a Moto Guzzi stops at Ballaugh to change a spark-plug and retires and his team-mate Stanley Woods retires on lap 5 with engine problems at Crosby.