China Aircraft Services Limited
China Aircraft Services Limited (), better known as CASL (), is a major provider of aircraft line and base maintenance, ground support equipment services, and cabin cleaning services at Hong Kong International Airport. History. CASL was founded in 1995 as a joint venture among Air China Group (via CNAC(G)), British Airways, Hutchison Whampoa (China), and United Airlines. Since the 2005, it has been a joint venture among China National Aviation Corporation (Group) Limited (40%), Hutchison Whampoa China (20%), United Airlines (20%), and China Airlines (20%). China Airlines acquired 13.33% stake from CNAC(G) in 2005 (which was acquired from  British Airways in 2003) and 6.67% from Hutchison Whampoa China. Since 2015, Hutchison Whampoa China became a wholly owned subsidiary of CK Hutchison Holdings. CASL is now a joint venture among China National Aviation Corporation (Group) Limited (40%), United Airlines, Inc. (20%), China Airlines Limited (20%) and Gama Group (Asia) Limited (20%). In October 2014, CASL extended its line maintenance services to Dragonair. The company now has over 80 customer airlines, major ones include Cathay Dragon, Hong Kong Airlines, HK Express and Air Macau. Apart from operating in Hong Kong, CASL and China Eastern Airlines established a joint venture company  in a 40-60 ratio, Shanghai Eastern Aircraft Maintenance Limited (SEAM), providing aircraft line maintenance and ground support equipment services at Shanghai Pudong International Airport since 2002. Business overview. CASL employs more than 1,000 staff members. CASL offers a range of services listed below: