| Mission 8 |
| Crew: 5 | CDR - Richard H. Truly |
| Plt - Daniel C. Brandenstein | |
| MS 1 - Guion S. Bluford | |
| MS 2 - Dale A. Gardner | |
| MS 3 - William E. Thornton | |
| Launch | 30 August 1983 @ 0232:00.009 EDST |
| Orbital incl: | 28.46 |
| Max alt: | 309.0 km. |
| Orbits: | 97 |
| Dur: | 6:01:08:43 |
| Landing: | 5 September 1983 @ 0040:43 PDST |
| Launch Window: | 34 minutes (2:15 - 2:49 am EDT) |
| TAL Sites: | Dakar, Senegal |
| AOA site: | Edwards, AFB |
| Primary landing site: | Edwards, AFB |
| Landing Speed: | 195 knots (224 mph) |
| Landing rollout: | 9,371' from main gear touchdown |
| Vehicle weight @ liftoff: | 4,492,074 lbs |
| Orbiter weight @ liftoff: | 242,742 lbs |
| Orbiter weight @ landing: | 203,945 lbs |
| Cargo mass approx.: | 30,076 lbs |
| Landing Weight: | 22,631 lbs |
| Special mission kits: | RMS-201, EMU's 1031 & 1032, food warmers, teleprinter, CBSA (see STS-6), TAGS and MADS II (Modular Auxillary Data System II), COMSEC (Communications Security Package) |
| INSAT-1B/PAM-D - 1983-089B | Deployed mass - 7,445 lbs, ASE (Insat 1B - 1,400 lbs approx.) |
| PDRS/PFTA - Payload Flight Test Article | (Detachable test payload fo rRMS) - 7,460 lbs |
| CFES: | (see STS-4), RME (Radiation Monitor Equipment - Space Test Program QRSP Q007), EOIM (DSO 0301), ISAL (Glow Photography, and a witness plate with 5 samples mounted on RMS) |
| SSIP: | SE-81-1 (Zero Gravity Biofeedback experiment) |
| OEX: | ACIP/HiRAP (See STS-6) |
| GAS: | G-0346, G-0347, G0348, G-0475. Also 250,000 US postal covers in 8 GAS cans & Bos (souvenir payload) & AEM (6 Rats) |
| SSME's: | 2017 (1), 2015 (2), 2012 (3) - all third use. At liftoff 100% and same after throttle-up |
| OMS Pods/Engines: | LP-99/106 & RP-99/105 - all third use. |
| ET: | ET-09 (LWT-02) |
| SRB's: | SRM-08 - Booster set successfully recovered |
| Left - 8A | Right - 8B | |||
| New | 019 | Fwd | 020 | New |
| 1-B | 066 | Cyl | 068 | 1-B |
| 1-A | 067 | Cyl | 069 | 1-B |
| New | L30 | Cyl | L34 | New |
| New | L31 | Cyl | L35 | New |
| New | L32 | Cyl | L36 | New |
| New | L33 | Cyl | L37 | New |
| New | L07 | Att | L08 | New |
| New | L13 | Stf | L15 | New |
| New | L14 | Stf | L16 | New |
| New | L19 | Aft | 020 | New |
| 17 January 1983 | ET-09 arrives on dock KSC |
| 23 June 1983 | ET/SRB mate |
| 30 June 1983 | OV-099 arrives OPF-1 following ferry flight from EAFB post STS-7 |
| 21 July 1983 | PDRS installed in cargo bay in OPF, follow by Insat on 9 August |
| 26 July 1983 | OV-099 rollover from OPF-1 to VAB High Bay 3 for stacking that same day |
| 2 August 1983 | Stack rollout to Pad 39A |
| 4 August 1983 | TCDT dress rehearsal conducted with crew onboard orbiter |
| 27 August 1983 | Astronaut arrival KSC at T-3 days and "Call to stations" 46 hr. countdown started at 3 pm EDT |
| 30 August 1983 | Launch |
| 5 September 1983 | Landing at Edwards AFB |
| 9 September 1983 | First leg of ferry flight to KSC stopping at Sheppard AFB, for a two day stopover |
| 11 September 1983 | Final leg of ferry flight from Sheppard AFB to KSC, OV-099 arrives in OPF same day |