This is a list of aviation-related events from 1973:

Events

Icelandair established.

January

• January 12 - A US Navy F-4 Phantom scores the 197th and final US air-to-air victory of the Vietnam War
• January 15 - final B-52 Stratofortress mission of the Vietnam War
• January 18 - Results of the USAF A-X fly-off announced, with the Fairchild YA-10 selected over the Northrop YA-9.
• January 27 - end of the Vietnam War

February

• February 24 - US Marine Corps helicopters begin clearing mines from North Vietnamese harbors

June

• June 3 - The first production Tupolev Tu-144 supersonic airliner broke-up during a demonstration flight at the Paris Air Show, killing 14.

August

• August 15 - the final USAF mission over Cambodia is flown

September

• September 11 - An AVE Mizar flying car prototype broke-up in flight over Oxnard, California killing the company founder and the pilot.

October

• October 6 - Egypt and Syria launch air strikes on Israel, starting the Yom Kippur War. The conflict lasts 18 days

First flights

• AVE Mizar (mid-1973)

April

• April 10 - Boeing T-43
• April 17 - PZL-101

May

• May 30 - WSK-Mielec M-15 Belphegor

July

• July 26 - Sikorsky S-69 71-1472

August

• August 5 - Trident Trigull C-F-TRI-X

September

• September 25 - MBB Bö 106

October

• October 8 - RFB Fanliner
• October 26 - Dassault-Breguet/Dornier Alpha Jet

November

• November 23 - AIDC T-CH-1

December

• December 23 - Aero Boero 260AG

Entered service

April

• April 16 - EMBRAER EMB-110 Bandeirante