For many years, Channel 5's news department, which has existed since its sign-on, was considered the benchmark of Los Angeles television. In 1958, KTLA began operating a well-equipped helicopter for newsgathering known as the "Telecopter", and was the most advanced airborne television broadcast device of its time; it was ultimately sold to NBC-owned KNBC (channel 4), which flew the Telecopter with pilot Francis Gary Powers and cameraman George Spears until it crashed on August 1, 1977, killing the two on board.