Dave (M'Larky Jim) Mallock told a tale about his early days as a Mid flying Whirlwinds. Helicopter aerodynamics was a thinly taught subject, so when he decided to see how fast the Whirwind would go the ensuing barrel roll caught his attention fairly smartish.
Copious coffees in the crewroom before he was able to go and discuss matters with his Splot, resulting in a much deeper knowledge of retreating blade stall and its effects
