The Transport Accident Investigation Commission (TAIC, Māori: Te Komihana Tirotiro Aitua Waka) is a transport safety body of New Zealand. It has its headquarters on the 16th floor of the AXA Centre in Wellington. The agency investigates aviation, marine, and rail accidents and incidents occurring in New Zealand. It does not investigate road accidents except where they have an impact on the safety of aviation, marine, or rail (e.g. level crossing or car ferry accidents)
Initially investigating aviation accidents only, the TAIC's jurisdiction was extended in 1992 to cover railway accidents and later in 1995 to cover marine accidents.
In May 2006, the Aviation Industry Association claimed too often the organisation did not find the true cause of accidents, after TAIC released the results of a second investigation into a fatal helicopter crash at Taumarunui in 2001. The Commission rejected the criticism, CEO Lois Hutchinson citing the results of a March 2003 audit by the International Civil Aviation Organization.