Boeing 737 narrowly avoided disaster in Belfast after crew error

A Boeing 737 jet struck a light almost 100 feet beyond the end of a runway and just 14 inches high after taking off with insufficient power when its pilots entered the incorrect air-temperature into a computer, according to an air accident bulletin. The jet, operated by Canada’s Sunwing Airlines, avoided crashing only because of the “benign nature” of the area beyond the runway at Belfast International airport in Northern Ireland and the low elevation of surrounding terrain, the UK Air Accident Investigation Branch said in the report Wednesday. The 737 limped into the air with just 60% of the usual thrust after the Sunwing crew entered a temperature of minus 52 Celsius into the plane’s flight management system, when the correct reading on July 21 this year was 16 degrees, the AAIB said. The computer reined back the engines because colder air requires less acceleration to achieve the same lift. The pilots didn’t notice the low takeoff speed until the 737 was approaching the end of the runway, and after takeoff continued the flight to Corfu, Greece, as planned, the AAIB said. The light struck by one of the aircraft’s tires was later found crushed on the ground having been knocked from its mounting. The AAIB recommended that the US FAA order upgrades to software that would crosscheck the outside air temperature, where required, as well as the necessary hardware<br/>