Table:
text: List of aircraft of Canada's air forces
Aircraft listing
Aircraft listing
Name_ _1968_CF_designator Place_of_manufacture Primary_roles Service_period _used_
AgustaWestland CH-149 Cormorant CH-149 UK/Italy Search and Rescue helicopter 2000–current 15
Airbus Polaris CC-150 France transport/tanker 1992–current 5
Airco DH.4 n/a UK bomber 1920–1928 12
Airco DH.9A n/a UK bomber 1920–1929 12
Airspeed Horsa n/a UK glider troop transport 1948–1950 3
Airspeed Oxford n/a UK trainer (navigation, bombing & radio) 1939–1947 819
Armstrong Whitworth Atlas n/a UK army co-operation 1927–1942 16
Armstrong Whitworth Siskin n/a UK fighter 1926–1940 12
Auster AOP6 & T7 n/a UK air observation post 1948–1958 42
Avro 504 n/a UK trainer 1920–1934 97
Avro 552 Viper n/a Canada forestry patrol 1924–1928 14

Question: How many airco dh.4s did the UK use during its service on the Canadian Air Force list of aircraft?