United Airlines passengers were given a shock after two planes collided while still on the ground. Flight 1871 had been on its way to Denver when its tail clipped that of Boston-bound Flight 796 in San Francisco.

Two United Airlines planes collided at a California airport — creating a jolt that felt like an “earthquake” to some passengers, according to authorities and reports.

United Airlines planes collide on San Francisco runway - Contact ‘occurred in an area where air traffic controllers do not communicate with flights', said the FAA

Near misses and potential collisions between planes are an increasing concern raised by pilots and industry experts, per an investigation by the New York Times

Passengers at San Francisco International Airport got an unexpected jolt when two United Airlines planes clipped each other on the tarmac, forcing tra.

United Airlines Flight 1871 was involved in a collision with another plane on the runway at San Francisco International Airport on Monday

A flight bound for Baltimore returned to San Francisco International Airport on Tuesday due to a burning smell, airline officials said.

It was shortly after 9 p.m. on a packed Monday evening departure bank at San Francisco International Airport that two United Airlines Boeing 737s one headed to Denver, the other to Boston unexpectedly came into contact with one another while executing a pushback operation.