US hurt by helicopter sales to China

US Military Advantage Hurt by Helicopter Tech Sale to China
The sheer size of China’s aerospace market appears to have enticed U.S.-based defense contractor United Technologies Corporation and its subsidiaries, Hamilton Sundstrand and Pratt & Whitney Canada, to intentionally ignore U.S. export restrictions by illegally exporting critical software systems that were used to build China’s first attack helicopter. China’s desire to circumvent Washington-imposed arms embargoes is hardly surprising, but the involvement by U.S. firms is, and seems to be a sign of a new challenge to American security.