JAKARTA: All five people on a test flight were killed in Indonesia on Saturday when their small plane crashed having changed one of its engines, a transportation ministry spokesman said.

The Cassa aircraft of Sabang Merauke Raya Air Charter left Batam Island and crashed on Bintan Island, both in Riau islands province.

"The pilot, co-pilot and three technicians died in the accident. They were on a flight test after they changed one of the engines for the aircraft," transportation ministry spokesman Bambang Ervan said.

Five police on a mission to help flood victims in eastern Indonesia were killed in October when their plane crashed into a tree during an emergency landing.