![]() STS-43 Credit: www.spacefacts.de  | 
AKA: Atlantis. Launched: 1991-08-02. Returned: 1991-08-11. Number crew: 5 . Duration: 8.89 days.
Payloads: Tracking and Data Relay Satellite (TDRS)-E/Inertial Upper Stage (Inertial), Space Station Heat pipe Advanced Radiator Element (SHARE)-II, Shuttle Solar Backscatter Ultraviolet (SSBUV) instrument 03, Optical Communications Through the Shuttle Window (OCTW), Air Force Maui Optical Site (AMOS) Calibration Test, Auroral Photography Experiment (APE)-B, Bioserve-Instrumentation Technology Associates Materials Dispersion Apparatus (BIMDA)-02, Investigations Into Polymer Membrane Processing (IPMP)-03, Protein Crystal Growth Ill Block Il, Space Acceleration Measurement System (SAMS), Solid Surface Combustion Experiment (SSCE)-02, Tank Pressure Control Experiment (TPCE).
Orbits of Earth: 142. Distance traveled: 5,955,216 km. Orbiter Liftoff Mass: 117,653 kg. Orbiter Mass at Landing: 89,235 kg. Payload to Orbit: 21,265 kg. Payload Returned: 4,192 kg. Landed at: Runway 15 at Kennedy Space Center, Florida. Landing Speed: 376 kph. Touchdown miss distance: 605 m. Landing Rollout: 3,014 m.
NASA Official Mission Narrative
Mission Name: STS-43 (42)
  Atlantis (9)
  Pad 39-A (41)
  42nd Shuttle mission
  9th Flight OV-104
  Scheduled KSC landing
  8th KSC landing  
Crew:
  John E. Blaha (3), Commander
  Michael A. Baker (1), Pilot
  Shannon W. Lucid (3), Mission Specialist 1
  James C. Adamson (2), Mission Specialist2
  G. David Low (2), Mission Specialist 3  
Milestones:
  OPF - April 19,1991
  VAB - June 19,1991
  PAD - June 25,1991  
Payload:
  TDRS-E,SSBUV-03,SHARE-II,OCTW-01,TPCE  
Mission Objectives:  
Launch:
  August 2,1991, 11:01:59 a.m. EDT. Launch originally set for July 23, but was moved to July 24 to allow time to replace a faulty integrated electronics assembly that controls orbiter/external tank separation. Mission postponed again about five hours before liftoff on July 24 due to a faulty main engine controller on number three main engine. Controller replaced and retested; launch reset for Aug. 1. Liftoff set for 11:01 a.m. delayed due to cabin pressure vent valve reading and postponed at 12:28 p.m. due to unacceptable return-to-launch site weather conditions. Launch reset for Aug. 2. Launch Weight: 259,374 lbs.  
Orbit:
  Altitude: 174nm
  Inclination: 28.45 degrees
  Orbits: 142
  Duration:  8 days, 21 hours, 21 minutes, 25 seconds.
  Distance:  3,700,400 miles  
Hardware:
  SRB: BI-045 
  SRM: 360L017
  ET : 47/LWT-40
  MLP : 1
  SSME-1: SN-2024
  SSME-2: SN-2012
  SSME-3: SN-2028  
Landing:
  August 11, 1991, 8:23:25 a.m. EDT, Runway 15, Kennedy Space Center, Fla. Rollout distance: 9,890 feet. Rollout time: 60 seconds.  First landing scheduled at KSC since 61-C in January 1986  (which was diverted to Edwards).  Landing Weight: 196,088 lbs.  
Mission Highlights:
  Primary payload, Tracking and Data Relay Satellite-5 (TDRS-5) attached to an inertial Upper Stage (I US), deployed about six hours into flight, and IUS propelled satellite into geosynchronous orbit; TDRS-5 becomes fourth member of orbiting TDRS cluster. Secondary payloads were Space Station Heat Pipe Advanced Radiator Element II (SHARE II); Shuttle Solar Backscatter Ultra-Violet (SSBUV) instrument; Tank Pressure Control Equipment (TPCE) and Optical Communications Through Windows (OCTW). Other experiments included Auroral Photography Experiment (APE-B) Protein Crystal Growth Ill (PCG Ill); Bioserve / Instrumentation Technology Associates Materials Dispersion Apparatus (BIMDA); Investigations Into Polymer Membrane Processing (IPMP); Space Acceleration Measurement System (SAMS); Solid Surface Combustion Experiment (SSCE); Ultraviolet Plume imager (UVPI); and the Air Force Maui Optical Site (AMOS) experiment.
Manned five crew. Deployed TDRS 5 satellite. Payloads: Tracking and Data Relay Satellite (TDRS)-E/lnertial Upper Stage (lUS), Space Station Heatpipe Advanced Radiator Element (SHARE)-ll, Shuttle Solar Backscatter Ultraviolet (SSBUV) instrument 03, Optical Communications Through the Shuttle Window (OCTW), Air Force Maui Optical Site (AMOS) Calibration Test, Auroral Photography Experiment (APE)-B, Bioserve-lnstrumentation Technology Associates Materials Dispersion Apparatus (BlMDA)-02, Investigations Into Polymer Membrane Processing (IPMP)-03, Protein Crystal Growth Ill Block Il, Space Acceleration Measure-ment System (SAMS), Solid Surface Combustion Experiment (SSCE)-02, Tank Pressure Control Experiment (TPCE).