|Legal status||Statutory Corporation|
The Civil Aviation Organization of Islamic Republic of Iran (CAO.IRI), (Persian: سازمان هواپیمایی کشوری جمهوری اسلامی ایران ) is Iran's civil aviation agency. It is the statutory corporation which oversees and regulates all aspects of civil aviation in Iran. The organization was established in July 1946 and its headquartered at Mehrabad International Airport in Tehran. It investigates aviation accidents and incidents in Iran.
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The head of the accident investigation board until 3 July 2020 was Hassan Rezaeifar, who was summarily terminated on that day because he had contacted a PS752 victim's husband who is a PhD student in Canada in the hope that he might exert pressure to have the husband delete Instagram posts which are critical of the Khamenei regime. Ralph Goodale said the phone call constituted "outrageous behaviour", while Global Affairs Canada wrote that "interference with Canadian citizens is totally unacceptable, very troubling and won't be tolerated. The government of Canada denounces any and all attempts to coerce or pressure Canadians, especially those suffering the loss of a loved one."
The CAOIRI responsibilities are as followed:
- Iran's skies Rules and Regulation
- Professional and private pilots
- Licensed aircraft engineers
- Air traffic controllers
- Licensed aerodromes
- Organisations involved in the design (DO), production (PO), continuing airworthiness management (CAMO) and maintenance (AMO) of aeronautical products
- Organisations involved in the training of pilot (ATO), air traffic controller and maintenance engineer (MTO)
- Aircraft registered in Iran
- Aero-Medical Centres (AeMC)
Previous Flight Calibration Service Fleet
- Beechcraft F33C Bonanza: Flight Service, registration mark EP-BAO. Derelict at Arak Airport 
- Dassault Falcon (Mystere) 20E: Flight Calibration Service, registration mark EP-FIC (since 09 Sep 1975). Crashed while performing navigational aide calibration at Kish International Airport on 3 March 2014.
- Dassault Falcon 2000EX: Flight Calibration Service, registration mark EP-FSC
- Rockwell 500S Shrike Commander: Registration mark EP-MAA, scrapped at Tehran-Ghaleh Morghi Airport in 2011.
- List of airlines of Iran
- List of airports in Iran
- Ministry of Roads & Urban Development
- Iranian Airports Holding Company
- Islamic Republic of Iran Air Force
- List of the busiest airports in Iran
- "Official website". www.cao.ir. Retrieved 2020-03-31.
- "Voluntary Reporting System." (Archive) Iran Civil Aviation Organization. 1/9. Retrieved on 12 January 2011.
- "Aircraft Accident/ Incident Report Form New Edition." Civil Aviation Organization of Iran. Retrieved on 12 January 2011. "vice president of civil Aviation in flight standard, Civil Aviation Organization of Iran, Mehrabad international airport, Tehran, Iran."
- "Safety & Accident Invst." Civil Aviation Organization of Iran. Retrieved on 3 February 2013.
- "Iran dumps Flight 752 investigator after he suggests Tehran kept airspace open to conceal 'imminent' attack". CBC. 3 July 2020.
- "Aviation Photo #2713064: Beech F33C Bonanza - CAO-IRI - Civil Aviation Organization of Islamic Republic of Iran". Airliners.net.
- "Aviation Photo #2413691: Dassault Falcon (Mystere) 20E - CAO-IRI - Civil Aviation Organization of Islamic Republic of Iran". Airliners.net.
- Ranter, Harro. "ASN Aircraft accident Dassault Falcon 20E EP-FIC Kish Island Airport (KIH)". aviation-safety.net.
- "Aviation Photo #2300189: Dassault Falcon 2000EX - CAO-IRI - Civil Aviation Organization of Islamic Republic of Iran". Airliners.net.
- "Aviation Photo #2320288: Rockwell 500S Shrike Commander - CAO-IRI - Civil Aviation Organization of Islamic Republic of Iran". Airliners.net.
- "Aviation Photo #1972049: Rockwell 500S Shrike Commander - CAO-IRI - Civil Aviation Organization of Islamic Republic of Iran". Airliners.net.