A Swiftair MD-83 airplane is seen in this undated photo. Authorities have lost contact with an Air Algerie flight en route from Ouagadougou in Burkina Faso to Algiers with 110 passengers on board, Algeria's APS state news agency and a Spanish airline company said on Thursday. [Photo/Agencies]

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.