At least 100 people have reportedly died, and local sources have been quoted as saying the death toll could exceed 200.
News reports said 14 ambulances were at the scene and injured people were being transferred to hospital.
It happened on Wednesday morning at Boufarik military airport, an air force base near the capital, Algiers.
Footage from the scene showed smoke coming off wreckage in a field.
The head of the army has ordered an investigation into the crash and will visit the scene, according to a statement from the defence ministry.
Four years ago a plane carrying military personnel and family members crashed in Algeria, killing 77 people.
(under the courtesy of dailynews.lk news web)