The launch was delayed one hour due to failure of a heater on the nitrogen gas ground support line.
Testing continued of space shuttle systems for qualification for operational flights. Testing of remote manipulator system and measurements of thermal response of orbiter in various attitudes to sun conducted. Get Away Special test canister and Spacelab pallet-mounted experiments for NASA’s Office of Space Science-1 (OSS-1) carried in payload bay. OSS-1 obtained data on near-Earth space environment, including contamination (gases, dust, etc.) introduced into space by orbiter itself. Other experiments: Monodisperse Latex Reactor (MLR), Electrophoresis Equipment Verification Test (EEVT), Heflex Bioengineering Test (HBT) and first Shuttle Student Involvement Program (SSIP) experiment. Problems encountered: space sickness, malfunctioning toilet, thermostat difficulty and unexplained static interfering with crew sleep. Auxiliary power unit registered overheating during ascent, but functioned properly during descent. Three communications links were lost.
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