law: Airports Economic Regulatory Authority of India Act, 2008
  Chapter III Powers
  
  and Functions of the Authority
  13. Functions of
  
  Authority. -
  1. 
  
   The
  
  Authority shall perform the following functions in respect of major airports,
  
  namely:-
  a.    to determine the
  
  tariff for the aeronautical services taking into consideration-
   
  
  i. 
  
   the
  
  capital expenditure incurred and timely investment in improvement of airport
  
  facilities;
   
  
  ii. 
  
   the
  
  service provided, its quality and other relevant factors;
   
  
  iii. 
  
   the
  
  cost for improving efficiency;
   
  
  iv. 
  
   economic
  
  and viable operation of major airports;
   
  
  v. 
  
   revenue
  
  received from services other than the aeronautical services;
   
  
  vi. 
  
   the
  
  concession offered by the Central Government in any agreement or memorandum of
  
  understanding or otherwise;
   
  
  vii. 
  
   any
  
  other factor which may be relevant for the purposes of this Act: Provided that
  
  different tariff structures may be determined for different airports having
  
  regard to all or any of the above considerations specified at sub-clauses (i)
  
  to (vii); 
  a. 
  
   
  b.    to determine the
  
  amount of the development fees in respect of major airports;
  c.    to determine the
  
  amount of the passengers service fee levied under rule 88 of the Aircraft
  
  Rules, 1937 made under the Aircraft Act, 1934;
  d.    to monitor the set
  
  performance standards relating to quality, continuity and reliability of
  
  service as may be specified by the Central Government or any authority
  
  authorised by it in this behalf; 
  e.    to call for such
  
  information as may be necessary to determine the tariff under clause (a);
  f.    to perform such other
  
  functions relating to tariff, as may be entrusted to it by the Central
  
  Government or as may be necessary to carry out the provisions of this Act. 
  1. 
  
   
  2. 
  
  
  
   The
  
  Authority shall determine the tariff once in five years and may if so
  
  considered appropriate and in public interest, amend, from time to time during
  
  the said period of five years, the tariff so determined.
  3. 
  
   While
  
  discharging its functions under sub-section (1) the Authority shall not act
  
  against the interest of the sovereignty and integrity of India, the security of
  
  the State, friendly relations with foreign States, public order, decency or
  
  morality.
  4. 
  
   The
  
  Authority shall ensure transparency while exercising its powers and discharging
  
  its functions, inter alia,-
  a.    by holding due
  
  consultations with all stake-holders with the airport;
  b.    by allowing all
  
  stake-holders to make their submissions to the authority; and
  c.    by making all
  
  decisions of the authority fully documented and explained.