The Zeppelin-Lindau Dornier Rs II hydroplane, piloted by Schröter and Schulte, succeeds in taking off from Lake Constance, Germany, and makes a four-minute flight.
The U.S. Navy makes its first operational test with Loran (long-range navigation) equipment with a receiver mounted in a K-2 airship on a flight from the Lakehurst, N.J. Naval Air Station.
Capt. Richard H. Coan, USAF, sets a new closed-circuit distance record for helicopters when he flies a Kaman H-43B Huskie a distance of 656.258 mi. This beats the previous record of 625.464 mi. set by a Soviet Mil Mi-1.
First flight of the Britten-Norman Islander.
The last produced Concorde (number 16) is delivered to British Airways.
Pioneer 10 crossed the orbit boundary of Pluto. Launched March 3, 1972, Pioneer 10 flew by Jupiter on December 1, 1973. It passed 132,250 kilometers from Jupiter's cloud tops. It returned over 500 images of Jupiter and its moons. Pioneer 10's greatest achievement was the data collected on Jupiter's magnetic field, trapped charged particles, and solar wind interactions. It has now left the solar system.