law: Airports Economic Regulatory Authority of India Act, 2008
  12. Vacancies, etc.,
  
  not to invalidate proceedings of Authority. -
  No act or proceedings
  
  of the Authority shall be invalid merely by reason of -
  a. 
  
   any
  
  vacancy in, or any defect in, the constitution of the Authority; or
  b. 
  
   any
  
  defect in the appointment of a person acting as a Member of the Authority;
  
  or(c) any irregularity in the procedure of the Authority not affecting the
  
  merits of the case.