Kathmandu, 5 January: All four China made Y-12 aircraft owned by Nepal Airlines Corporation have been grounded due to lack of efficient management. Out of four Y-12 aircraft, one was regularly conducting scheduled flights. That too has been grounded since 22 December. Earlier, the aircraft were kept grounded saying that there was scarcity of pilot to fly the aircraft. Now, the management is showing different reasons for not flying them, reports Naya Patrika daily. People’s News Monitoring Service