In early 1960s began development of cheap, easy-to-fly helicopter, a prototype of which was completed in 1968. Other single-seat models followed, but development of WGM.22 two-seater ended mid-1970s. D.Mondey "The New Illustrated Encyclopedia of Aircraft", 2000
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Stack trace:
#0 /data03/virt15346/domeenid/www.aviastar.org/htdocs/helicopters_eng/aerotechnik_wg-21.php(56): mysqli_connect('mysql5.zone.ee', 'd14657sa18989', Object(SensitiveParameterValue))
#1 {main}
thrown in /data03/virt15346/domeenid/www.aviastar.org/htdocs/helicopters_eng/aerotechnik_wg-21.php on line 56
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