Under Section 20 of the Airports Authority of India Act, 1994, the Authority shall be competent to enter into and perform any contract necessary for the discharge of its functions under the Act, subject to the provisions of:

Section 20 of the Airports Authority of India Act, 1994 provides that, subject to the provisions of Section 21, the Authority shall be competent to enter into and perform any contract necessary for the discharge of its functions under the Act. Section 21, in turn, prescribes the mode of executing such contracts - requiring that every contract be made on behalf of the Authority by the Chairperson or a duly empowered member or officer, sealed with the common seal where specified by regulations, and subject to previous approval either of the Authority itself (for contracts above a Central-Government-fixed value) or of the Central Government (for immovable property transactions, long-term leases exceeding thirty years, or contracts above a separately fixed higher value). Read together, Sections 20 and 21 establish both the Authority's general contracting competence and the specific procedural safeguards governing its exercise.