NASA initiated a rescue launch campaign for Skylab 3 with astronauts Vance Brand and Don Lind selected as the designated rescue crew for both Skylab 2 and Skylab 3.
Skylab 3 launched on July 28, 1973 on a 54-day mission.
Three crewed Skylab missions were planned as Skylab 2, Skylab 3, and Skylab 4, with the SL-R plan using the next vehicle in line as the rescue vehicle.
NASA canceled the Skylab 3 rescue mission on August 10, 1973 after determining the spacecraft could safely return the crew without rescue.
Three crewed Skylab missions were planned as Skylab 2, Skylab 3, and Skylab 4 with the next vehicle in line designated to serve as the rescue vehicle under the SL-R plan.
Vance Brand and Don Lind were selected as the rescue astronauts for both Skylab 2 and Skylab 3.