Incident Overview
On 19 May 1993, SAM Colombia Flight 501, a Boeing 727-46 registered as HK-2422X, crashed into Mount Paramo Frontino near Medellín, Colombia. The aircraft was operating a flight from Panama City, Panama, to Bogotá with a stopover in Medellín. All 132 occupants—7 crew members and 125 passengers—died in the accident.
Aircraft and Crew
The aircraft involved was a Boeing 727-46 (serial number 217) built in 1965. It was powered by three Pratt & Whitney JT8D-7A turbofan engines. The aircraft had previously served with Japan Airlines (registration JA8309) and Korean Air (registration HL7309) before being acquired by SAM Colombia in 1980.
The flight crew consisted of Captain Mauricio Oswaldo Vacca Mejía, aged 31, who had 3,943 total flight hours and qualified as a Boeing 727 commander in May 1992. First Officer Julio César Andrade Granados, aged 29, had 1,651 flight hours and qualified as a co-pilot in February 1993 after serving as a flight engineer. Flight Engineer Jaime Eduardo Martínez Basallo, aged 45, had 553 hours with SAM Colombia since his employment in mid-1992.
Navigation Challenges
During the approach to Medellín, thunderstorm activity in the area made automatic direction finder (ADF) navigation difficult. Compounding this, the Medellín VOR/DME was unusable due to a terrorist attack. The crew reported over the Abejorral NDB beacon at flight level 160 (approximately 16,000 feet). The flight was cleared to descend to flight level 120 (about 12,000 feet), after which communication was lost.
Because the radio beacon was unserviceable, the crew made navigational errors. The aircraft had not yet reached the beacon when it began its descent and struck Mount Paramo Frontino, which has an elevation of 3,749 metres (12,300 feet).
Response
After multiple failed attempts to contact the flight, Medellín air traffic control declared an emergency.