| Crew: 5 | CDR - Robert L. Crippen |
| Plt - Francis R. Scobee | |
| MS 1 - Terry J. Hart | |
| MS 2 - James D. van Hoften (EV 2) | |
| MS 3 - George D. Nelson (EV 1) | |
| Launch | 6 April 1984 @ 1257:59.999 |
| Orbital incl: | 28.51 |
| Max alt: | 497.3 km. |
| Orbits: | 107 |
| Dur: | 6:23:40:07 |
| Landing: | 13 April 1984 @ 0538:07 PST |
| Launch Window: | 3 minutes (8:58 - 9:01 am EST) |
| TAL Sites: | Dakar, Senegal (Alternate: Rota, Spain) |
| AOA site: | Edwards, AFB |
| Primary landing site: | KSC/SLF-15, scheduled at 8:09 am EST, 12 April |
| Landing Speed: | 213 knots (245 mph) |
| Landing rollout: | 8,716' from main gear touchdown |
| Vehicle weight @ liftoff: | 4,508,234 lbs |
| Orbiter weight @ liftoff: | 254,329 lbs |
| Orbiter weight @ landing: | 196,975 lbs |
| Cargo mass approx.: | 38,266 lbs |
| Landing weight: | 16,870 lbs |
| Special mission kits: | RMS-302, EMU's 1043 & 1044, PLSS 1007 BU, CBSA (See STS-41B), Linhof Camera, EMU TV, teleprinter, Galley, MFR, Two MMU's/FSS's, T-Pad and MADS |
| Long Duration Exposure Facility (LDEF) - 1984-034B | Deployed mass - 21,396 lbs (57 expirements) |
| Flight Support System (FSS) | For Solar Maximum Satellite repairs - 8,915 lbs |
| Solar Maximum Satellite - 1980-014A | Retrieved, Repaired and deployed - 5,093 lbs |
| EVA-1 - 8 April, duration 2 hrs., 57 min. | Nelson - MMU-2 | Duration - 42 minutes |
| EVA-2 - 11 April, duration 6 hrs., 16 min. | Van Hoften - MMU-3 | Duration - 28 minutes |
| RME - QRSP Q007 (see STS-8), Mid-deck - IMAX Camera, Cargo bay - Cinema-360, SSIP: | SE82-17 (Bees in Space Experiment) |
| OEX: | ACIP/HiRAP (see STS-6) |
| SSME's: | 2109 (1) - 2nd use, 2020 (2) - 1st use, 2012 (3) - 5th use. At Liftoff 104%, same after throttle-up |
| OMS Pods/Engines: | LP-03/107 - 1st use, RP-99/105 - 5th use |
| ET: | ET-12 (LWT-05) |
| SRB's: | SRM-11 - Booster set successfully recovered, one chute on RH SRB failed to open |
| Left - 11A | Right - 11B | |||
| 3-A | 002 | Fwd | 012 | 5-B |
| 3-A | 043 | Cyl | 045 | 3-A |
| D-5 | 016 | Cyl | 013 | 2-B |
| New | L43 | Cyl | L46 | New |
| D-5 | L16 | Cyl | L47 | New |
| New | L44 | Cyl | L48 | New |
| New | L45 | Cyl | L49 | New |
| 5-A | 003 | Att | 008 | 2-B |
| 1-B | 020 | Stf | 026 | 2-A |
| 1-B | 022 | Stf | 027 | 2-B |
| 3-A | 004 | Aft | 011 | 2-B |
| 1 August 1983 | ET-12 arrives on dock KSC |
| 11 February 1984 | OV-099 arrives in OPF-2 following KSC landing of Mission 10/STS 41B |
| 28 February 1984 | ET/SRB mate |
| 14 March 1984 | OV-099 rollover from OPF-2 to VAB High Bay 3 for stacking next day |
| 19 March 1984 | Stack rollout to Pad 39A |
| 20 March 1984 | LDEF payload installed in payload bay |
| 21 March 1984 | TCDT dress rehearsal conducted with crew aboard orbiter |
| 25 March 1984 | FSS installed in payload bay |
| 3 April 1984 | Astronaut arrival KSC |
| 4 April 1984 | "Call to stations" 43 hr. countdown started at 3 am EST |
| 6 April 1984 | Launch |
| 13 April 1984 | Landing at Edwards AFB |
| 17 April 1984 | First leg of ferry flight from EAFB to Kelly AFB for overnight stay and delivery to KSC the next day |
| 19 April 1984 | OV-099 arrives in the OPF |
| 2 December 1989 | At 5:26 am EST, the Solar Maximum Satellite reentered earth's atmosphere and was destroyed |