United Airlines Flight 811, a Boeing 747-122 (registration number N4713U), took off from Honolulu International Airport bound for Sydney, Australia, via Auckland, New Zealand with 3 flight crew, 15 flight attendants, and 337 passengers aboard at approximately 01:52 local time. As the 747 climbed to between 22,000 and 23,000 feet the R5 cargo door tore open, decompressing the cabin and leaving a gaping hole. Five rows of business class seats were blown out of the aircraft, along with nine passengers. A flight attendant, lying down beside the hole caused by the decompression, was severely injured. This is the national geographic investigation.