Nos. 1 & 2 Air Navigation Schools offered four-week courses in astronavigation and were the last step for Air Observers.
The RAF schools, Nos. 31, 32, and 33, provided the same training as Air Observer Schools.
RCAF.info - RCAF Station Pennfield Ridge NB
History of 2 ANS Pennfield Ridge NB
2 Air Navigation School was disbanded at Pennfield Ridge April 1942.
Unit was reformed in Charlottetown, Prince Edward Island February 1944. The unit was again disbanded on 7 July 1945. The Unit was reformed in Winnipeg, Manitoba on 1 August 1951. The unit was redesignated No 2 Air Observer School 15 November 1955.