| Crew: 5 | CDR - John O. Creighton |
| Plt - John H. Casper | |
| MS 1 - Richard M. Mullane | |
| MS 2 - David C. Hilmers (EV 1) | |
| MS 3 - Pierre J. Thuot (EV 2) | |
| Launch | 28 February 1990 @ 0250:22 EST |
| Orbital incl: | 62.00 |
| Max alt: | 254.3 km. |
| Orbits: | 71 |
| Dur: | 4:10:18:22 |
| Landing: | 4 March 1990 @ 1008:44 PST |
| Launch Window: | DOD announced period: 12:00 - 4:00 am EST (Window 1 hour, 13 minutes: 12:51 - 2:04 am, extended to 2:51 am) |
| TAL Sites: | Zaragoza (alternate - Moron); two-engine out: Dover AFB, ME |
| AOA site: | White Sands |
| Primary landing site: | Edwards AFB |
| Landing Speed: | 199 knots (229 mph) |
| Landing rollout: | 7,900' from main gear touchdown |
| Vehicle weight @ liftoff: | 4,507,283 lbs |
| Orbiter weight @ liftoff: | 187,200 lbs (without cargo) |
| Orbiter weight @ landing: | N/A |
| Cargo mass approx.: | N/A |
| Landing Weight: | N/A |
| Special mission kits: | EMU's 2007 & 2008, Galley, teleprinter, no RMS |
| DOD-04 AFP-731 Reconnaissance Satellite - 1990-019B/USA-53 | Mass - 37,300 lbs. SPDS deployment system (reportedly deployed at 5:50 am EST 1 March, rev. 18) |
| Mid-deck | Phantom Head (DSO 0469), RME-III (see STS-8), and VFT-1 & VFT-2 |
| SSME's: | 2019 (1) - 6th use, 2030 (2) & 2027 (3) - Both 4th use. At Tower Clear 104% |
| OMS Pods/Engines: | LP-01/106 - Pod 3rd use, Motor 12th use & RP-03/114 - Pod 11th use, Motor 4th use |
| ET: | ET-33 (LWT-26) |
| SRB's: | BI-036 (RSRM-9) - Set successfully recovered |
| Left - 36A | Right - 36B | |||
| New | 049 | Fwd | 037 | TEM1 |
| 21 | 080 | Cyl | 037 | 020 |
| New | 019n | Cyl | 008n | 27 |
| 26 | L30 | Cyl | L98 | Q-7 |
| 26 | L18n | Cyl | L17n | 26 |
| 26 | L120 | Cyl | L119 | 26 |
| 27 | L23n | Cyl | L12n | 26 |
| 27 | L21 | Att | L16 | TEM1 |
| 27 | L51 | Stf | L40 | Q-8 |
| 27 | L53 | Stf | L38 | 27 |
| 27 | 031 | Aft | 051 | New |
| 10 August 1989 | ET-33 arrives on dock KSC (from Vandenberg AFB storage) |
| 30 October 1989 | OV-104 returns to the OPF-1 following Mission-31/34R |
| 22 December 1989 | ET/SRB mate |
| 19 January 1990 | OV-104 rollover from OPF-1 to VAB High Bay 3 for stacking the next day |
| 25 January 1990 | Stack rollout to Pad 39A |
| 3 February 1990 | TCDT dress rehearsal conducted with crew aboard orbiter |
| 17 February 1990 | Astronaut arrival KSC (CDR & PLT returned to JSC 26 February and came back to KSC the next day) |
| 18 February 1990 | Original "Call to stations" 43 hr countdown started at 4 pm EST |
| 19 February 1990 | Due to CDR Creighton's mild flu the launch was delayed |
| 22 February 1990 | "Call to stations" 43 hr countdown started at 4 pm EST |
| 28 February 1990 | Launch |
| 4 March 1990 | Landing at Edwards AFB |
| 11 March 1990 | First leg of ferry flight from Edwards AFB to Biggs Army Air Field with a two night stay |
| 13 March 1990 | Second leg of ferry flight from Biggs AAF to Columbus AFB to KSC and delivery to OPF-2 the next day |