A 230 or 150 gallon secondary mailbox can be hung below the centerline of the fuselage. In addition, four 7.62mm M60C machine guns were fixed inside the short wing. Therefore, the firepower of OV- 10A should not be underestimated, and FAC began to have the ability of counterattack and active attack only after it was equipped with OV- 10A. The aircraft has a battery life of 3 hours and a range of 2,680 kilometers.
OV- 10 also has outstanding short takeoff and landing performance, light and fast low-altitude maneuverability and flexible weapon mounting method, so it is very popular with the military. In the battlefield evaluation conducted from April to June in 1969, the shortest response time was only 5 minutes!
OV- 10A The modification training for pilots takes about 16 weeks, including 25 hours of indoor training and 75 hours of flight training. In the past three years, five instructors of the Air Force have trained 97 foreign troops and 422 crew members on OV- 10A. During this period, the total flight time in the air was 8800 hours.