April 22 in aviation: Boeing Vertol 107-II made the first flight; The UK and France ordered four Concordes

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On April 22, 1958, the Boeing Vertol 107-II prototype made its first flight to Philadelphia. Both the Vertol 107 and the military version - CH-46 Sea Knight - continue to serve worldwide.

Other aviation events on April 22.

The first flight of the Aero Boero AB-210 aircraft.

On April 22, 1971, the first flight of the Aero Boero AB-210 aircraft, an Argentine civilian aircraft, took place, a development of the AB-180 model with improved performance delivered by a fuel-injected engine. Unlike previous aircraft from this manufacturer, it also featured the tricycle undercarriage, but retained the same general high-wing configuration. Only one prototype was built.

The aircraft was later redesigned with a more powerful Lycoming O-540 and renamed AB-260 (not to be confused with the Aero Boero 260AG). A second example was also built to this standard, but no mass production resulted.

Four more Concorde aircraft are being built.

On 22 April 1971, the United Kingdom and France agreed to four more Concorde aircraft, bringing their total to ten.

The flight Pan Am 812 crashed in Bali.

On April 22, 1974, Pan Am 812, a Boeing 707-321B, crashed into mountainous terrain 78.7 km northwest of Denpasar, Bali. All 107 passengers and crew on board the aircraft were killed.

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