21 Squadron War Diary
April 11 L.G. 98
Prior to proceeding on Administrative duties to CAIRO with the Adjutant, the O.C. Lt.Col. Irvine, flew with Lt.Col. Borckenhagen in a Baltimore to provide the O.C. of 15 Squadron with a brief "introduction flight" to this type of aircraft. Earlier in the week a similar flight had been arranged for the S.A.O.A.Col. W. Hingeston who paid a short visit to the squadron.