law: Airports Economic Regulatory Authority of India Act, 2008
  30. Right to legal
  
  representation. -
  The applicant or
  
  appellant may either appear in person or authorises one or more chartered
  
  accountants or company secretaries or cost accountants or legal practitioners
  
  or any of its officers to present his or its case before the Appellate
  
  Tribunal. Explanation.- For the purposes of this section,-
  a. 
  
   "chartered
  
  accountant" means a chartered accountant as defined in clause (b) of
  
  sub-section (1) of section 2 of the Chartered Accountants Act, 1949 and who has
  
  obtained a certificate of practice under sub-section (1) of section 6 of that
  
  Act; 
  b. 
  
   "company
  
  secretary" means a company secretary as defined in clause (c) of
  
  sub-section (1) of section 2 of the Company Secretaries Act, 1980 and who has
  
  obtained a certificate of practice under sub-section (1) of section 6 of that
  
  Act;
  c. 
  
   "cost
  
  accountant" means a cost accountant as defined in clause (b) of
  
  sub-section (1) of section 2 of the Cost and Works Accountants Act, 1959, and
  
  who has obtained a certificate of practice under sub-section (1) of section 6
  
  of that Act;
  d. 
  
   "legal
  
  practitioner" means an advocate, vakil or an attorney of any High Court,
  
  and includes a pleader in practice.