The Australian national authority for Annex 18 and competent authority for these Instructions is the:

• Civil Aviation Safety Authority (CASA)
  GPO Box 2005
  Canberra ACT 2601
  Australia
  E-mail: dg@casa.gov.au
  Telephone: +61 131757
  Facsimile: +61 2 6217 1300
  Website: www.casa.gov.au/dg