Jakarta, Jan 29 (DPA) Two mechanics were killed by rotor blades Thursday when the helicopter they were servicing tilted on its side, an official said.

The pilot and mechanics were making last-minute checks on the aircraft before take-off when the accident happened at a military airport about 30 km southwest of the Indonesian capital Jakarta, said transport ministry spokesman Bambang Ervan.

The spinning blades killed the two mechanics instantly while the pilot and another technician in the cockpit were injured, he said.

Police said the helicopter belonged to the Pelita Air Service charter company.