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| Crew: 7 | CDR - Karol J. Bobko |
| Plt - Donald E. Williams | MS 1 - M. Rhea Seddon |
| MS 2 - S. David Griggs (EV 2) | |
| MS 3 - Jeffrey A. Hoffman (EV 1) | |
| PS 1 - Charles D. Walker | |
| PS 2 - Sen. E. J. "Jake" Garn | |
| Launch | 12 April 1985 @ 0859:05 EST |
| Orbital incl: | 28.52 |
| Max alt: | 460.3 km. |
| Orbits: | 109 |
| Dur: | 6:23:55:23 |
| Landing: | 19 April 1985 @ 0854:29 EST |
| Launch Window: | 1) 10 minutes - 8:04 - 8:14 am EST, 2) 15 minutes - 8:45 - 9:00 am EST |
| TAL Sites: | Dakar, Senegal (Alternate: Moron) |
| AOA site: | Edwards AFB |
| Primary landing site: | KSC/SLF, scheduled at 8:15 am EST, 17 April |
| Landing Speed: | 200 knots (230 mph) |
| Landing rollout: | 10,430' from main gear touchdown |
| Vehicle weight @ liftoff: | 4,505,245 lbs |
| Orbiter weight @ liftoff: | 250,891 lbs |
| Orbiter weight @ landing: | 198,014 lbs |
| Cargo mass approx.: | 35,824 lbs |
| Landing weight: | 13,248 lbs |
| Special mission kits: | RMS-301, EMU's 1059 & 1060, HUD, MADS III, teleprinter, PSA (EVA), and food warmer (no gallery). |
| HS-376 Telesat-I (Anik-C1/PAM-D) - 1985-028B | Deployed mass - 7,386 lbs, ASE (Anik-C1 - 1,390 lbs) | |||
| HS-381 Syncom IV-3 (LEASAT-3) - 1985-028C | Deployed mass - 15,190 lbs, ASE (Leasat-3 - 3,054 lbs - Failed, see STS 51-I) |
| EVA-1 - 16 April, duration 3 hrs., 10 min. | Hoffman & Griggs |
| Mid-deck: | CFES-III, AFE (American Flight Echocardiograph), PCG (Protein Crystal Growth), PPE (Phase Partitioning Experiment). |
| SSIP: | 1) SE82-3 (Statoliths in Corn Root Caps), 2) SE83-3 (Effects o fWeightlessness on the Aging of Brain Cells/Houseflies in Fly Enclosure Module - FEM). |
| GAS: | 1) G-0035, 2) G-0471. Also, two Statue of Liberty replicas for souvenirs (US P.O.) |
| SSME's: | 2109 (1) - 6th use, 2018 (2) - 5th use, 2012 (3) - 8th use. At liftoff 100%, same after throttle-up. |
| OMS Pods/Engines: | LP-03/107 - 5th use, & RP-03/108 - 4th use |
| ET: | ET-18 (LWT-11) |
| SRB's: | SRM-17/BI-018 - Booster set successfully recovered, continued use of new larger chutes |
| Left - 17A | Right - 17B | |||
| 7-A | 016 | Fwd | 011 | 9-B |
| 7-A | 041 | Cyl | 036 | Q-4 |
| 8-B | 068 | Cyl | 066 | 8-A |
| 7-A | L17 | Cyl | L21 | 7-B |
| 7-A | L18 | Cyl | L22 | 7-B |
| 7-A | L19 | Cyl | L37 | 8-B |
| 7-A | L20 | Cyl | L31 | 8-A |
| 7-A | L04 | Att | L02 | 6-B |
| 8-A | L14 | Stf | L15 | 8-B |
| New | L26 | Stf | L16 | 8-B |
| 6-A | 005 | Aft | 017 | 7-B |
| 27 June 1984 | ET-18 for 51-D arrives on dock KSC |
| 10 February 1985 | OV-099/51-E rollover from OPF-1 to VAB High Bay 1 for mating |
| 14 February 1985 | ET/SRB mate for 51-E |
| 15 February 1985 | Rollout of 51-E stack to Pad 39A |
| 4 March 1985 | Rollback of 51-E stack to VAB due to malfunctioning TDRS-B satellite in OV-099 Cargo Bay |
| 7 March 1985 | OV-099 transferred from VAB to OPF for remanifesting to fly 51-B |
| 8 March 1985 | A falling platform in OPF damaged OV-103's Payload Bay Door forcing a two week delay in the 51-D flight |
| 23 March 1985 | OV-103 rollover from OPF-2 to VAB High Bay 3 for stacking of 51-D, amted same day |
| 28 March 1985 | Rollout to Pad 39A of 51-D stack |
| 29 March 1985 | 51-D payload insertion at Pad 39A |
| 30 March 1985 | TCDT dress rehearsal conducted with crew aboard orbiter |
| 9 April 1985 | Astronaut arrival KSC |
| 10 April 1985 | "Call to stations" 43 hr. countdown started at 2 am EST |
| 12 April 1985 | Launch |
| 19 April 1985 | Landing at SLF/KSC and delivered to OPF same day |