The CH-46E Sea Knight helicopter, manufactured by the ; ABoeing-Vertol Co. from the early 1960s through 1971, is the Marine A Corps' primary troop carrier, capable of holding 25 passengers. It saw heavy use and many casualties during the Vietnam War, but has since had a good safety record. ”Local Marine CH-46 crashes, problemsMarch 27,1989: Two Marines die when two CH-46E helicopters from an El ‘fcro-based squadron collide near Fallon Naval Air Station inNevada. :March 16,1989: Four Marines die when a Tustin-based CH-46Ecrashes in South Korea.April 12,1988: A Tustin-based CH-46E makes an emergency landing near Irvine Boulevard and Jamboree Road because of mechanicalproblems. No one is injured.March 2,1988: A Tustin-based CH-46E slams into a fire spotting tower in the Cleveland National Forest, destroying the helicopter but only slightly injuring the four Marines on board.Feb. 19,1988: ATustin-based CH-46E makes an emergency landing on a beach in South Laguna after a generator fails and the cabin fills with smoke. No injuries.Nov. 22,1987: One Marine dies and 25 servicemen are injured when a Tustin-based CH-46E on a night-vision goggle mission suffers an engine failure, attempts an emergency landing and crashes into its aircraft carrier.Sept. 3,1987: ATustin-based CH-46E crashes into a hill at Camp Pendleton during a night-vision goggle flight, killing four Marines.Feb. 12,1987: An El Toro-based Marine Corps Reserve CH-46E crashes in Trabuco Canyon during a night-vision goggle flight, killing three Marines.Feb. 18,1986: Two Tustin-based Marines die and a third is injured when their CH-46E crashes into the Pacific Ocean off the Philippine Islands.