21. For Swiss airspace, this duty extends to both civil and military air navigation services. 22. In 1934 the college expanded to accommodate day cadets and courses for civil air navigation . 23. No . 1 Air Navigation School was located here between March 1957 & December 1961. 24. Haynes went to Rockwell Field, California, for special training in air navigation and instrument flying. 25. Several road projects and plans to improve maritime and air navigation facilities are also included. 26. AAI is a full member of the Civil Air Navigation Services Organisation ( CANSO ). 27. Category IIIb automatic landing capability for bad-weather operations and Future Air Navigation Systems are available. 28. He said safety problems have been identified and remedied, including an upgrade of air navigation facilities. 29. The Airport and Air Navigation Authority said flight departures were delayed by up to 30 minutes 30. All mention of the Civil Air Ensign was therefore omitted from the Air Navigation Order 1960.
