The EUK13 dimensional model of the launch vehicle was delivered to Baikonur for handling demonstrations and production of tooling.

Demolition and construction work began at Space Launch Complex 6 in preparation for the Space Shuttle program. References: 88 .

Start long-lead fabrication crew module, Challenger (OV-099) References: 15 .

Vietnam and Vietnam-backed Cambodian insurgents announce fall of Phnom Penh, Cambodian capital, and collapse of Pol Pot regime

Area survey photo reconnaissance satellite; returned film capsule. References: 1 , 2 , 6 .

High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 1 , 2 , 6 .

Military navigation satellite. References: 1 , 2 , 5 , 6 .

Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international coope ration scheme). References: 1 , 2 , 5 , 6 .

Obtaining information needed for research into the natural resources of the earth and the development of methods for remote sensing of the underlying surface, and obtaining meteorological information. In addition to Soviet apparatus, carried scientific ap paratus from the German Democratic Republic. References: 1 , 2 , 6 .

High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 1 , 2 , 5 , 6 .

Spacecraft charging experiments. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 .

Start orbiter/ET/SRB burnout mated vertical ground vibration test, MSFC References: 15 .

Manned precursor. Recovered April 1, 1979 10:09 GMT. Soyuz T Test.
Maneuver Summary:
197 km X 240 km orbit to 255 km X 297 km orbit. Delta V: 33 m/s
255 km X 297 km orbit to 264 km X 306 km orbit. Delta V: 4 m/s
264 km X 306 km orbit to 309 km X 321 km orbit. Delta V: 17 m/s
309 km X 321 km orbit to 279 km X 357 km orbit. Delta V: 18 m/s
279 km X 357 km orbit to 352 km X 402 km orbit. Delta V: 32 m/s
352 km X 402 km orbit to 363 km X 384 km orbit. Delta V: 8 m/s
Total Delta V: 112 m/s
Officially: Investigation of the upper atmosphere and outer space. References: 1 , 2 , 6 .

Mission Control Center-Houston/Goldstone ready for operational flight test early operations. References: 15 .

Following the decision to cancel Chelomei's manned Almaz military space station programme, a resolution consolidated the programs, with the Mir docking ports to be reinforced to accommodate 20 tonne space station modules based on Chelomei's TKS manned ferry spacecraft. NPO Energia was made responsible for the overall space station, but subcontracted the work to KB Salyut due to the press of in-house work on Energia, Salyut 7, Soyuz-T, and Progress. The subcontractor began work in the summer of 1979.

Experimental Communications Satellite. Experimental Communications Satellite (ECS). Launch time 0846 GMT. ECS was injected into the planned transfer orbit. On 9 Feb, however, ECS ceased radio transmissions about 10 seconds after the apogee kick motor was fired. Communicat ions and propagation experiments of satellite-communication systems. Operation and control experiment for geostationary satellites. Mass at launch 260 kg. Configuration - cylindrical. Height 1.9m including antenna. Diameter 1.4m. Spin stabilized. References: 1 , 2 , 5 , 6 .

Radar calibration. Radar calibration mission. References: 1 , 2 , 5 , 6 .

Test mission of Okean satellite without the radar. Development of methods for obtaining operational information on the Pacific Ocean. References: 1 , 2 , 5 , 6 .

Production of the Mir space station and Aelita free-flyer was authorised together.

Area survey photo reconnaissance satellite. References: 279 .

Studied dust, liquid droplets in upper atmosphere. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 .

Transmission of color and black-and-white USSR central television programmes to a network of receivers for collective use. References: 1 , 2 , 5 , 6 , 67 , 274 .

Soft X-ray telescope. Launching organization: Institute of Space and Aeronautical Science, University of Tokyo. Function: Observation of X-ray radiation of celestial bodies with good time resolution over a wide spectrum range. Characterstics: weight 96 kg, configuration regula r octagonal prism, height 0.66 m, diameter 0.76m, spin stabilized. Expected life 2 years. References: 1 , 2 , 5 , 6 .

High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 1 , 2 , 6 .

Ionosphere and magnetosphere studies; destroyed 9/13/85 (while still functioning) as part of ASAT test. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 , 278 .

Manned two crew. Docked with Salyut 6. Transported a team consisting of V A Lyakhov and V V Ryumin to the Salyut-6 space station to conduct scientific investigations and experiments and repair work. Recovered June 15, 1979 16:18 GMT. Returned unmanned. References: 1 , 2 , 6 , 32 , 33 .

Complete mated vertical ground vibration test program at MSFC, Enterprise (OV-101) References: 15 .

Area survey photo reconnaissance. Spacecraft depressurization led to malfunction of spacecraft. Deorbited after 12 days. References: 1 , 2 , 6 , 69 .

Comprehensive investigations of the structure of the earth's ionosphere, the characteristics of wave processes and the propagation of radio waves in the ionospheric plasma. Launched under the Intercosmos programme by the USSR in cooperation with the Peopl e's Republic of Bulgaria, the Czechoslovak Socialist Republic, the Hungarian People's Republic and the Polish People's Republic. References: 1 , 2 , 5 , 6 , 116 .

Operational readiness date, shuttle landing site, Edwards (Edwards AFB) Runway 23, for first manned orbital flight References: 15 .

Acquisition of meteorological information required for use in the operational weather service with the aid of advanced equipment. References: 1 , 2 , 5 , 6 .

Columbia (OV-102) transported overland from Palmdale to Edwards (38 miles) References: 15 .

Shuttle carrier aircraft/Columbia (OV-102) test flight at NASA Edwards References: 15 .

Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 14 Mar 1979 07:19:21 GMT. Undocked on 3 Apr 1979 16:10:00 GMT. Destroyed in reentry on 5 Apr 1979 00:10:22 GMT. Total free-flight time 3.40 days. Total docked time 20.37 days. References: 1 , 2 , 6 , 275 .

High resolution photo reconnaissance satellite; returned film capsule; maneuverable. References: 1 , 2 , 6 .

Eight satellites launched by a single carrier rocket. References: 1 , 2 , 5 , 6 .

KH-9 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). References: 1 , 2 , 5 , 6 .

Space shuttle main engine 2005, first flight engine delivered to NSTL for acceptance test firings References: 15 .

Ferry flight, shuttle carrier aircraft/Columbia (OV-102) from Edwards to Biggs Army Air Base, El Paso, Texas (3 hours, 20 minutes) References: 15 .

Military navigation satellite. References: 1 , 2 , 5 , 6 .

Ferry flight, shuttle carrier aircraft/Columbia (OV-102) from Biggs Army Air Base to Kelly AFB, San Antonio, Texas (1 hr, 39 min) References: 15 .

Ferry flight, shuttle carrier aircraft/Columbia (OV-102) from Kelly AFB to Eglin AFB, Fla. (2 hours, 12 minutes) References: 15 .

Ferry flight, shuttle carrier aircraft/Columbia (OV-102) from Eglin AFB to KSC (1 hour, 33 minutes) References: 15 .

Space shuttle main engine 2007, flight engine delivered to NSTL for acceptance test firing References: 15 .

Area survey photo reconnaissance satellite; returned film capsule. References: 1 , 2 , 6 .