The Republic of China Army Aviation (RoCAA; Taiwan) has extreme difficulties keeping its 29 new AH-64E Apache Guardian attack helicopters airborne. Part of the problem is a discovered material failure due to faulty production by Boeing. The American manufacturer of the legendary attack helicopter is using a new aluminum-magnesium alloy for the tail rotor gearbox and this material seems to be the reason of corrosion in salty and humid climates such as in Taiwan. Nine AH-64Es are grounded because of this issue, while Boeing technicians are trying to find a solution but for now just advising ill-tested short-term measures. Another...