This page from a U.S. Navy pilot's personal flight logbook records January 1951 flights in the PBM-5 Mariner, a twin-engine patrol flying boat used for maritime patrol and anti-submarine operations. The entries, signed by the pilot Wayne E. Bancroft, illustrate the routine documentation naval aviators kept of every flight, tracking aircraft type, duty, and accumulated hours - here totaling nearly 400 hours as pilot. Such logbooks are invaluable primary sources for tracing an individual aviator's service history during the Korean War period. Project: 218132