Audrey Pratt obituary

When Audrey Pratt was in the Women’s Auxiliary Air Force she developed a flair for ‘dead reckoning’, interpreting the whereabouts of aircraft that had gone missing from radar Photograph: none

My grandmother, Audrey Pratt, who has died aged 100, was a talented illustrator and made a great contribution to the Women’s Auxiliary Air Force during the second world war.

As a specially trained tracker of missing aircraft, her skills were called upon throughout the night of 6 June 1944, D-day, to plot the course of Royal Navy boats during the Normandy landings.