1980 Iran Air Boeing 727 airplane crash
Encyclopedia
On January 21, 1980, an Iran Air
Boeing 727-86
was making a domestic flight from Mashad Airport
to Tehran-Mehrabad Airport in Iran. At 1911h local time, the aircraft, registered as EP-IRD, collided with the Alborz Mountains, 29 kilometres (18 mi) north of Tehran
, during its approach to Tehran-Mehrabad runway 29 in foggy and snowy weather conditions. All 8 crew members and 120 passengers died in the accident, and the plane was destroyed. At the time, it was the deadliest aircraft disaster in Iranian history.
Investigators concluded that the probable cause of the crash was believed to be an inoperable instrument landing system
and ground radar
.
Iran Air
Iran Air , formally Airline of the Islamic Republic of Iran is the flag carrier airline of Iran, operating services to 60 destinations, 35 international and 25 domestic. The cargo fleet operates services to 20 scheduled and 5 charter destinations...
Boeing 727-86
Boeing 727
The Boeing 727 is a mid-size, narrow-body, three-engine, T-tailed commercial jet airliner, manufactured by Boeing. The Boeing 727 first flew in 1963, and for over a decade more were built per year than any other jet airliner. When production ended in 1984 a total of 1,832 aircraft had been produced...
was making a domestic flight from Mashad Airport
Mashhad International Airport
Mashhad International Airport or Shahid Hashemi Nejad Airport is an airport in Mashhad, Razavi Khorasan, Iran.The airport is country's second busiest only to Tehran Mehrabad Airport and above the famous Tehran's Imam Khomeini International Airport. In 2009 airport handled 5,005,645 passengers...
to Tehran-Mehrabad Airport in Iran. At 1911h local time, the aircraft, registered as EP-IRD, collided with the Alborz Mountains, 29 kilometres (18 mi) north of Tehran
Tehran
Tehran , sometimes spelled Teheran, is the capital of Iran and Tehran Province. With an estimated population of 8,429,807; it is also Iran's largest urban area and city, one of the largest cities in Western Asia, and is the world's 19th largest city.In the 20th century, Tehran was subject to...
, during its approach to Tehran-Mehrabad runway 29 in foggy and snowy weather conditions. All 8 crew members and 120 passengers died in the accident, and the plane was destroyed. At the time, it was the deadliest aircraft disaster in Iranian history.
Investigators concluded that the probable cause of the crash was believed to be an inoperable instrument landing system
Instrument Landing System
An instrument landing system is a ground-based instrument approach system that provides precision guidance to an aircraft approaching and landing on a runway, using a combination of radio signals and, in many cases, high-intensity lighting arrays to enable a safe landing during instrument...
and ground radar
Radar
Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...
.