Launch from Cape Canaveral (KSC); landing 1320 km southwest of San Diego in the Pacific Oecean.

First crew of the Skylab space station. "Rescue mission" for the overheated space station, which had been damaged at its launch. EVAs: Weitz on 25.05.1973 (0h 35m) (first attempt to release to the solar panel - failed), Conrad and Kerwin on 07.06.1973 (3h 23m) (successful release of the solar panel), Conrad and Weitz on 19.06.1973 (1h 36m) (replacement of film cartridges for solar camera). Substantial repairs, including deployment of a parasol sunshade, which brought the temperatures down to tolerable levels. Solar astronomy and Earth resources experiments and medical studies were performed. The sunshade had been built within 7 days.

The recovery ship was the USS Ticonderoga. With this mission the crew set a new manned spaceflight duration record.