A 1st Marine Aircraft Wing CH-46 Sea Knight prepares to lift water and ammunition to Marine ground forces in Vietnam. Marine pilots have flown more than 195,000 combat hours in the medium assault helicopter. The Boeing 107 fleet of helicopters, featuring 12 different models, has passed the 500,000 cumulative flight-hour mark. Largest single contributor oE … Continue reading CH-46’s Top 385,000 Hours