New Delhi: The Board for Reconstruction of Public Sector Enterprises has asked Air India to refer itself to the BRPSE so that the debt-ridden carrier can be put on a revival plan.

The BRPSE, under Heavy Industries and Public Enterprises Minister Praful Patel, has sent a letter in this regard to the Air India Chairman and Managing Director Rohit Nandan, sources said.

"The BRPSE has sent the communication to Air India CMD a week ago..." official sources said. However, it has not received any response from Air India.

A PSU is considered sick if its accumulated losses in any fiscal are equal to 50 percent or more of its average net worth in the preceding four years.

Earlier, the BRPSE had written to the Civil Aviation Ministry without receiving any formal response. It was conveyed informally to the BRPSE that since Air India revival was pending before a Group of Ministers (GoM), it was not desirable for the issue to be referred to the board in the Department of Public Enterprises.

Air India has been incurring losses for four consecutive years, since 2007 and has piled up the losses of Rs 20,320 crore till March 2011.