Salter joined the Royal Air Force at the age of 18 with the intention of becoming an engineering officer but she went on to train as a pilot after the British government announced that women would be allowed to fly jet aircraft in 1992. As part of her engineering training she had studied at the Royal Military College of Science. Salter was awarded her wings on 3 April 1992 and at the end of 1992 she finished her fast jet training at RAF Brawdy with Dawn Hadlow ("nee" Bradley), who became Britain's first RAF female flight instructor.