The cause was found to be the rotor linkage, and further inspection found that two of the other three Ka-22s suffered from the same defect. Subsequently, in order to improve stability and control, a complex differential autopilot was installed. This sensed attitude and angular accelerations, and fed into the control system.
1961 – In Operation Sageburner, a United States Navy McDonnell F4H-1F Phantom II fighter, Bu. No. 145307, flown by Lieutenants Huntington Hardisty and Earl De Esch, set a world speed record, averaging 1,452.777 kilometers per hour (902.714 miles per hour) over a 3-kilometer (1.864-mile) course while flying below 125 feet (38.1 m) at all times.
1958 – First flight of the Beechcraft Queen Air, an American twin-engined light aircraft evolution of the Model 65 with a more modern swept tail and more powerful engines.
1957 – A rocket-boosted English Electric Canberra sets a new world altitude record of 70,308 ft (21,430 m)
1934 – Aug 28-Sept 16 – The fourth International Tourist Aircraft Contest Challenge 1934 in Warsaw, won by the Polish crew of Jerzy Bajan on the RWD-9 plane.
1928 – Famed bush pilot Clennell (Punch) Dickins leaves on his 12-day survey of the eastern Arctic. He covers 6,336 km in 37 hours of flying; he often navigates by the sun.
1923 – United States Army Air Service Lieutenant John Richter and Lowell Smith establish a new endurance record of 37 hours 15 min in an Airco DH.4, covering 3,293 miles (5,299 km). They are refueled fifteen times during the flight.
1919 – The International Air Traffic Association (IATA) is formed at The Hague, Holland.
1910 – Armand Dufaux pilots a Dufaux 4 biplane 66 km (41 mi) from St. Gingolph to Geneva at an altitude of around 150 m (500 ft), taking 56 min and 5 seconds for the crossing of Lake Geneva, the longest flight over “open water” at the time.
1908 – The US Army accepts its first dirigible. It is 96 feet long, with a 20-hp Curtiss engine.