flight lieutenant 
noun
A rank of officer in the RAF, above flying officer and below squadron leader.The group ranges in rank from sergeant to flight lieutenant and includes technical specialists, a military working dog handler and an air traffic control officer....
- He was promoted to the rank of flight lieutenant in 1998 and started a RAAF undergraduate residency training at Nambour General Hospital in Queensland.
- He served as a flight lieutenant in the Royal Air Force bomber command until 1947.