Hartsfield became part of NASA Astronaut Group 7 in September 1969. He was a member of the astronaut support crew for Apollo 16 and served as a member of the astronaut support crew for the Skylab-2, -3, and -4 missions.[1] He also was a CAPCOM on STS-1.
Hartsfield retired in August 1977 from the United States Air Force with more than 22 years of active service but continued his assignment as a NASA astronaut in a civilian capacity. He was a member of the orbital flight test missions group of the Astronaut Office and was responsible for supporting the development of the Space Shuttle's entry flight control system and its associated interfaces.
Hartsfield served as backup pilot for STS-2 and STS-3, Columbia's second and third orbital flight tests.[8][9]
Hartsfield was the pilot on STS-4, the fourth and final orbital test flight of the shuttle Columbia, which launched from Kennedy Space Center, Florida, on June 27, 1982. He was accompanied by Thomas K. Mattingly II (spacecraft commander) on this seven-day mission designed to: further verify ascent and entry phases of shuttle missions; perform continued studies of the effects of long-term thermal extremes on the Orbiter subsystems; and conduct a survey of Orbiter-induced contamination on the orbiter payload bay.[6] Additionally, the crew operated several scientific experiments located in the Orbiter's cabin as well as in the payload bay. These experiments included the Continuous Flow Electrophoresis System (CFES), designed to investigate the separation of biological materials in a fluid according to their surface electrical charge.[10] The crew is also credited with effecting an in-flight repair which enabled them to activate the first operational "Getaway Special" — comprising nine experiments that range from algae and duckweed growth in space to fruit fly and brine shrimp genetic studies. STS-4 completed 112 orbits of the Earth before landing on a concrete runway at Edwards Air Force Base, California, on July 4, 1982.[5]
Hartsfield was next spacecraft commander of STS-41-D which launched from Kennedy Space Center, Florida, on August 30, 1984. The crew included Michael L. Coats (pilot), Judith A. Resnik, Steven A. Hawley and Richard M. Mullane (mission specialists), and Charles D. Walker (payload specialist). This was the maiden flight of the orbiter Space Shuttle Discovery. During the six-day mission the crew successfully activated the OAST-1 solar cell wing experiment, deployed three satellites, SBS-D, SYNCOM IV-2 (LEASAT-2), and TELSTAR 3-C, operated the CFES-III experiment, the student crystal growth experiment, and photography experiments using the IMAX motion picture camera. The crew earned the name "Icebusters" when Hartsfield successfully removed a hazardous ice buildup from the orbiter using the Remote Manipulator System (Canadarm).[4] STS-41-D completed 96 orbits of the Earth before landing at Edwards Air Force Base, California, on September 5, 1984.
With the completion of this flight, Hartsfield had logged 483 hours in space.[4]
Between 1986 and 1987, Hartsfield served as the Deputy Chief of the Astronaut Office. In 1987, he became the Deputy Director for Flight Crew Operations, supervising the activities of the Astronaut Office and the Aircraft Operations Division at the Johnson Space Center (JSC).[11]
In 1989, he accepted a temporary assignment in the Office of Space Flight at NASA Headquarters in Washington, D.C. There he served as Director of the Technical Integration and Analysis Division, reporting directly to the Associate Administrator for Space Flight. In this assignment, he was responsible for facilitating the integration of the Space Station Freedom and its unique requirements into the Space Shuttle systems. His office also served as a technical forum for resolving technical programmatic issues.
In 1990, Hartsfield accepted another temporary assignment as the Deputy Manager for Operations, Space Station Projects Office, at the Marshall Space Flight Center in Huntsville, Alabama. In that capacity, he was responsible for the planning and management of Space Station Operations and Utilization Capability Development and operations activities including budget preparation. Later in that assignment, he also acted as the Deputy Manager for the Space Station Projects Office.
In 1991, Hartsfield accepted the position of the Man-Tended Capability (MTC) Phase Manager, Space Station Freedom Program and Operations (SSFPO), with a duty station at the Johnson Space Center. Reporting directly to the Deputy Director, SSFPO, he represented the Deputy Director in providing appropriate program guidance and direction to the Space Shuttle Program, and across the Space Station Freedom Program for all MTC phase mission unique activities to assure appropriate resolution of issues.
In December 1993, Hartsfield accepted the position of Manager, International Space Station (ISS) Independent Assessment. In this capacity, he reported directly to the Associate Administrator for Safety and Mission Assurance and managed and focused the oversight activities and assessment of the International Space Station Program.
In September 1996, the scope of Hartsfield's work was expanded to include independent assessment of the programs and projects of the Human Exploration and Development of Space (HEDS) Enterprise and he was named Director, HEDS Independent Assurance.[12]
Hartsfield retired from NASA in 1998 and then joined the executive ranks of Raytheon Company as vice president of aerospace engineering services.[6] He retired from Raytheon in 2005. He died on July 17, 2014, from complications from back surgery.[3]