"Preliminary reports indicate that about half the 203 passengers on board are dead," a television presenter said.
There were 14 crew members on board but their fate was not immediately known.
The plane had just arrived from Jordanian capital Amman when the accident occurred, the television said, adding that the capital had been hit first by a sandstorm and then by heavy showers late on Tuesday.
Police officials interviewed by the channel said the plane veered off the runway as it landed and caught fire.
Emergency services had rushed to the aircraft in "numbers" and were fighting the blaze.
Families of passengers were waiting at the airport "in fear", the television said
Passengers who escaped the plane told a television channel that the aircraft's right engine caught fire shortly after landing and that flames quickly spread throughout the plane.
Sudan has a poor aviation record.
In May this year, South Sudan's defence minister was killed in a plane crash along with at least 22 other people, most of them senior members of the southern former rebel leadership.
Lieutenant General Dominic Dim Deng's plane came down 375 kilometres from the southern capital Juba, killing everyone on board, including many army officers.
In July 2003, 115 people were killed when a Sudan Airways Boeing 737 was destroyed in a ball of fire as it attempted to land at the Red sea coast resort of Port Sudan after apparently suffering an engine problem soon after takeoff.
Source: By DDNEWS
