REGIONAL SEARCH

Burkinabe authorities have set up a crisis unit in Ouagadougou airport to provide information to families.

Issa Saly Maiga, head of Mali's National Civil Aviation Agency, said that a search was under way for the missing flight.

"We do not know if the plane is Malian territory," he told Reuters. "Aviation authorities are mobilised in all the countries concerned - Burkina Faso, Mali, Niger, Algeria and even Spain."

Aviation websites said the missing aircraft, one of four MD-83s owned by Swiftair, was 18-years-old. The aircraft's two engines are made by Pratt & Whitney, a unit of United Technologies.

US planemaker McDonnell Douglas, now part of Boeing , stopped producing the MD-80 airliner family in 1999 but it remains in widespread use. According to British consultancy Flightglobal Ascend, there are 482 MD-80 aircraft in operation, many of them in the United States.

"Boeing is aware of the report (on the missing aircraft). We are awaiting additional information," a spokesman for the planemaker said.

Swiftair has a relatively clean safety record, with five accidents since 1977, two of which caused a total of eight deaths, according to the Washington-based Flight Safety Foundation.

Air Algerie's last major accident was in 2003 when one of its planes crashed shortly after take-off from the southern city of Tamanrasset, killing 102 people.

In February this year, 77 people died when an Algerian military transport plane crashed into a mountain in eastern Algeria.