United Airlines Boeing 777 forced to turn around mid-flight due to'maintenance issue' A landing gear door on the plane opened during takeoff, leaking liquid. This is the fifth incident in a week for United Airlines and Boeing.

On Monday, a Boeing 787 Dreamliner operated by the Chilean company Latam violently lost altitude in mid- flight after a “technical incident” According to the company, numerous passengers were injured. The American manufacturer is at the heart of several investigations after a series of incidents and production problems.