(a) whether various Indian and foreign airlines have not paid airport usage fees to the Airport Authority of India (AAI) during the last three years and the current year;
(b) if so, the details thereof along with the amount due to AAI as a result thereof, airline-wise;
(c) whether AAI proposes to charge penal interest for delay in payment of airport usage fees;
(d) if so, the details thereof along with the amount likely to be collected by way of penal interest; and
(e) the action taken or proposed to be taken by AAI to recover its dues from such airlines?