Concerns have been raised over Chinese-built Y-12 turboprop planes used by the Sri Lanka Air Force (SLAF) after one such plane crashed yesterday (Friday).
Defence sources told the Colombo Gazette there was a concern the planes were not safe and should have been grounded.
An Air Force Y-12 crashed in Haputale yesterday killing four people on board.
The Chinese-built Y-12 turboprop aircraft had taken off from the southern airbase of Wirawila and was heading to Ratmalana when it crashed.
The cause of the crash was not yet known.