Pitchshift started to being used in 1999, remote control enthusiasts used to do a uneard control movement with the joy stick to mimic old Russian jetfighter pilots. Meanwhile before that in USA, Robin Olds, American, fighter pilot and general officer in the United States Air Force. Born in Honolulu, Hawaii in July 14, 1922 he climb his way to be known as "triple ace", with a combined total of 17 victories in World War II and the Vietnam War. He retired in 1973 as a brigadier general, after 30 years of service. He preformed a manoeuvre called the iron nail, later renamed by many the Pitchshift.

This manoeuvre can be explained like this:
pitchshift

  1. an inversion of a control command to the user either as an effect by an application, or as a signal
"the software is able to control its pitchshift by setting a direction and changing the sensitivity of its screen"
Robin Olds

But in the world of airplanes and remote control, the reality is different. Again the Russians outgun all the pilots when applying pitchshift in an aircraft, reports say that Robin Olds, had a Russian girlfriend that teach him to do it, but he had to keep it as a secret, back then the times where different.