CUTAWAY: AH-1Z Viper enters production as substantially new aircraft By Initially envisioned as an effort to modernise the drive train of the US Marine Corps' (USMC) veteran fleet of Bell AH-1W Super Cobra helicopters, the AH-1Z Viper has essentially evolved into a new aircraft. The helicopter, which was developed alongside its close cousin, the UH-1Y, is a significant technological leap over its predecessor. The new airframe offers increased aerodynamic performance and exponentially more sophisticated avionics. The service hopes to procure some 226 AH-1Zs, including 58 new-build airframes and 168 machines remanufactured from the AH-1W. For the USMC, the appeal of...