| Crew: 5 | CDR - John E. Blaha |
| Plt - Michael A. Baker | |
| MS 1 - Shannon W. Lucid | |
| MS 2 - G. David Low (EV 1) | |
| MS 3 - James C. Adamson (EV 2) | |
| Launch | 2 August 1991 @ 1102:00.0432 EDT |
| Orbital incl: | 28.47 |
| Max alt: | 329.9 km. |
| Orbits: | 142 |
| Dur: | 8:21:21:25 |
| Landing: | 11 August 1991 @ 0823:25 EDT |
| Launch Window: | 4 hours, 5 minutes (11:02 am - 3:07 pm EDT) - limited to 2 hour, 30 minutes 'crew on back' constraint |
| TAL Sites: | Banjul, Gambia (alternates: Ben Guerir, Morocco and Moron, Spain) |
| AOA site: | Edwards AFB( alternates - KSC and WS) |
| Primary landing site: | KSC/SLF (Scheduled - 8:19 am EDT) |
| Landing Speed: | 203 knots (233 mph) |
| Landing rollout: | 9,890' from main gear touchdown |
| Vehicle weight @ liftoff: | 4,526,488 lbs |
| Orbiter weight @ liftoff: | 259,382 lbs |
| Orbiter weight @ landing: | 196,735 lbs |
| Cargo mass approx.: | 46,882 lbs |
| Landing Weight: | 9,242 lbs |
| Special mission kits: | EMU's, Galley, teleprinter, TAGS, PSA, Payload Bay Liner, four loaded cryo-tank sets and no RMS |
| TDRS-E/IUS-#15 - 1991-054B | Deployed mass - 37,640 lbs. See STS-6 |
| SHARE-II | See STS-29R |
| SSBUV-3 | See STS-34 |
| OCTW | Optical Communications Through the Shuttle Window |
| Mid-deck | AMOS (see STS-29R), APE-B (see STS-9), BIMDA-2 (see STS-37), IPMP-3 (see STS-31R), PCG-III-Block 2-II, SAMS (Space Acceleration Measurement System), SSCE-4 (see STS-41), and TPCE (Tank Pressure Control Experiment), UVPI-1 (Ultraviolet Plume Instrument) |
| SSME's: | 2024 (1) - 3rd use, 2012 (2) - 12th use, 2028 (3) - 6th use |
| OMS Pods/Engines: | LP-01/106 - Pod 6th use, Motor 15th use & RP-01/111 - Pod 6th use, Motor 10th use |
| ET: | ET-47 (LWT-40) |
| SRB's: | BI-045 (RSRM-17) - Set successfully recovered |
| Left - ?A | Right - ?B | |||
| TEM5 | ? | Fwd | ? | 27 |
| 32 | ? | Cyl | ? | TEM3 |
| 32 | ? | Cyl | ? | New |
| 29 | ? | Cyl | ? | 32 |
| New | ? | Cyl | ? | 32 |
| TEM3 | ? | Cyl | ? | 32 |
| New | ? | Cyl | ? | 32 |
| 32 | ? | Att | ? | 32 |
| 32 | ? | Stf | ? | 32 |
| 32 | ? | Stf | ? | 32 |
| 32 | ? | Aft | ? | 32 |
| 19 February 1991 | ET-47 arrives on dock KSC |
| 19 April 1991 | OV-104 returns to OPF-2 following Mission-39/STS-37 |
| 4 June 1991 | ET-47/SRB mate in VAB High Bay 1 |
| 19 June 1991 | OV-104 rollover from OPF-2 to VAB High Bay 1 for stacking the same day |
| 25 June 1991 | Stack rollout to Pad 39A |
| 26 June 1991 | TDRS-#/IUS was installed into the orbiter on the pad |
| 3 July 1991 | TCDT countdown dress rehearsal conducted with crew aboard |
| 29 July 1991 | "Call to stations" 43 hr countdown started at 4 pm EDT |
| 30 July 1991 | Astronaut arrival KSC |
| 2 August 1991 | Launch |
| 11 August 1991 | Landing at KSC/SLF (no ferry flight) OV-104 returned to OPF-2 the same day |