Kathmandu, April 21 -- All four Chinese-made Y12e and one MA60 planes of Nepal Airlines has been grounded for a long time, causing the state-owned carrier millions in losses.

According to Nepal Airlines Corporation officials, three airworthy 17-seater Y12e aircraft has been grounded due to the lack of instructor pilots. Meanwhile, one Y12e and an MA60 have been grounded for maintenance.

Troubled started after sole instructor pilot of Y12e Ang Noori Sherpa, who was sent to China for training returned and tendered his resignation two weeks ago. He then flew to the United States. The corporation has not been able to take action against Sherpa although he violated the contract agreement.

Sherpa's resignation has grounded two Y12e captains ...