(a) whether the process of tender bidding, security clearance of Navi Mumbai Airport is yet to take off;
(b) if so, the details thereof along with the number of parties shortlisted by the Government of Maharashtra in this regard;
(c) the current status of security clearance at the said airport; and
(d) whether the use of renewable energy and energy efficiency is proposed to be made compulsory for all new airports including Navi Mumbai and if so, the details thereof?