The U.S. Army retired the AH-1 Cobra in 2000 due to maintenance costs and poor nighttime performance, but the Marines ...

The US Marine Corps is replacing the two-bladed AH-1W with the AH-1Z, which features a new, four-bladed composite rotor system, performance-matched transmission, four-bladed tail rotor, two additional ...

A malfunctioning sensor near the tail rotor forced a Marine Corps AH-1Z Viper attack helicopter to make an emergency landing on Okinawa, Japan, Monday.

However, the AH-1Z Viper improved upon the AH-1W in a few notable ways beyond the additional helicopter blades, including an upgraded transmission, a four-bladed tail rotor, an integrated glass ...

The AH-1Z Viper, itself a development of the Super Cobra, continues the line. The Super Cobra first flew in 1983 at Bell’s Flight Research Center in Arlington, Texas, and the first AH-1Ws were ...

The Marine Corps is replacing the two-bladed AH-1W with the AH-1Z, which features a new, four-bladed composite rotor system, performance-matched transmission, four-bladed tail rotor, upgraded landing ...

Navy Lt. James E. Mazzuchelli, 32, died Saturday after he was critically injured by the tail rotor of a UH-1Y Venom. ... The squadron flies UH-1Y Venoms and AH-1Z Cobras.

Rotors: The UH-1B had a two bladed semi-rigid metal rotor system with a two bladed tail rotor. ... and the unique folding rotor system as the AH-1Z Viper derivative of the Cobra attack helicopter.