Operational Training Units (OTU’s) 16 OTU Upper Hayford January - December 1943 , January - December 1944 January - May 1945 16 OTU 17 OTU Upwood (Hunts) Silverstone April - August 1943 , September - December 1943 17 OTU 18 OTU Hucknall Form 540 - 1940 - 1944 in year order Appendices 1940 - 1944 in year order 18 OTU Hucknall 19 OTU Kinloss Form 540 1940 - 1945 in year order 19 OTU Kinloss 19 OTU Kinloss Course Photographs for 1940, 1941, 1942, 1943 , Visits and Base Photographs 19 OTU Photographs
