Show Canada Begins Probing Worst Air Collision TORONTO Ont March 14 UP UPA uPA A A court of inquiry began investigation investigation investigation gation Friday of Canadas Canada's worst military aviation accident a collision collision collision colli colli- sion of two bombers in which seven men were killed and an eighth seriously injured The accident occurred 1 late ate a t e Thursday at Bond Head Ont ant about 25 miles from here when two Avro-Anson Avro bombing planes collided during navigational exercises exercises exercises exer exer- and both crashed to earth Th The entire crew of one plane was killed when the craft exploded and three of four men in in the other ship died |