A helicopter crashed on the tennis courts of Parque Manuel Belgrano in Buenos Aires, Argentina, injuring the pilot and two passengers after the aircraft malfunctioned and was forced to make an emergency landing. | Reuters

Helicopter Slams Into Mountainside After Sudden Mechanical Failure, Passengers Escape Moments Before Impact Boulder County, CO — A sightseeing helicopter crashed into a steep mountainside Thursday afternoon after what investigators believe was a sudden mechanical failure, sending the aircraft cartwheeling down a rocky slope in a shower of debris. Miraculously, all passengers survived after managing to exit the aircraft just seconds before the final crash. The dramatic video begins with a group o