Connexion by Boeing (CBB) was an in-flight online internet connectivity service from Boeing. This service allowed travellers to access a high-speed internet connection while on board a plane in flight through a wired Ethernet or a wireless 802.11 Wi-Fi connection. Connexion by Boeing was formed as a separate business unit of The Boeing Company. Major development on the service commenced with a partnership agreement between United Airlines, Delta Air Lines, and American Airlines on June 13, 2001. [1] Lufthansa joined the partnership as the International launch customer on June 17, 2001. United, Delta, and American subsequently withdrew from the partnership after the 9/11 terrorist attacks due to the severe drop in airline travel that occurred after the attacks.