Revision S May 2002 SPACE SHUTTLE MISSIONS SUMMARY Page 27 - STS 51-L LANDING SITE/ SSME-TL CREW LAUNCH SITE, RUNWAY, NOM-ABORT SRB ORBIT PAYLOAD MISSION HIGHLIGHTS (7) FLT ORBITER LIFTOFF TIME, CROSSRANGE EMERG RSRM FSW WEIGHTS, (LAUNCH SCRUBS/DELAYS, NO. LANDING SITES, LANDING TIMES THROTTLE AND INC HA/HP PAYLOADS/ TAL WEATHER, ASCENT I-LOADS, TITLE, NAMES ABORT TIMES FLT DURATION, PROFILE ET EXPERIMENTS FIRSTS, SIGNIFICANT ANOMALIES, ETC.) & EVA'S WINDS ENG. S.N. STS 51-L OV-099 CDR: KSC 39B 104/104 BI-026 28.45° PLANNED OI7-26 CARGO: KSC W / D : OPF 30, VAB 5, PAD 28 = 63 (STS-33) (Flight 10) Francis R. Scobee 28:16:38:00.1Z 109% STANDARD (2) 52685 lbs Challenger (Flt 2 - STS 41-C) 9:38:00 AM EST (P) MTR: INSERTION LAUNCH POSTPONEMENTS : SEQ FLT #25 P126/R34/V30/M33 11:38:00 AM EST (A) 1 = 2023 (5) HPM CHARGEABLE: - On 12/23/85, the 1/22/86 launch was postponed 1 day Tuesday 4 2 = 2020 (6) 153.5 NM 48633 lbs to 1/23/86 to accommodate an integrated simulation KSC-25 PLT: 1/28/86 3 = 2021 (6) CASE: (STS 61-C launch delay impact). 1-day slip. OMS PODS Michael J. Smith LWC DEPLOYABLE: - On 1/22/86, the 1/23/86 launch was postponed 2 days PAD LVO1 - 7 P127/R92/M84 LAUNCH WINDOW : 37636 lbs to 1/25/86 because of KSC work schedule being 39B-1 RVO1 - 7 3 Hours ET-26 impacted by STS 61-C landing delays. 2-day slip. FRC9 - 10 M / S : TAL SUNSET NON - DEPLOYED : Judith A. Resnik (CASABLANCA) LWT-19 10167 lbs LAUNCH SCRUBS : (Flt 2 - STS 41-D) - 1/25/86 launch scrubbed early in count by MMT due to P128/R41/V31/F2 PLS - KSC MIDDECK: forecast of unacceptable weather at KSC throughout SLS - EDW 830 lbs launch window. Launch rescheduled for 1/27/86. M / S : TAL - CASABLANCA - 1/27/86 launch scrubbed. Countdown halted at T-9 Ronald E. McNair TAL WX - DAKAR PRIMARY: minutes when a GSE hatch fixture could not be removed (Flt 2 - STS 41-B) TDRS-B/IUS-3 from exterior of side hatch, followed by a problem with a P129/R32/V32/M31 MAX Q = 720 PSF SPARTAN portable drill. Handling tool attach screw was drilled out. M = 1.35 -HALLEY/MPESS One hour and 20 minutes later, when the hatch problem M / S : was resolved, the winds at KSC RTLS runway had Ellison S. Onizuka ANCILLARY: increased and exceeded the maximum allowable (Flt 2 STS 51-C) CHAMP crosswind velocity. Launch rescheduled for 1/28/86. P130/R51/V33/M47 FDE 6-day total slip. RME - During the night, the temperature at KSC dropped to the P / S : TISP low twenties. Ice had accumulated in the pad area and Gregory Jarvis PPE ice inspections were made during night and morning of (HAC) SSIP (3) 1/28. P/131/R93/M85 ACIP LAUNCH DELAYS : P / S : 3 CRYO TANK - 1H00M delay during T-3 hour hold due to late ET Christa McAulliffe SETS tanking start caused by a GSE H2 fire alarm detector (Civilian Teacher) problem in LH2 ground storage tank. P132/R94/F9 RMS 18 (S.N. 302) - 1H00M additional delay after ice team inspection of ice formed by leaking H20 hoses. The decision was made to allow additional time for ice on pad to melt. - 2H00M launch delay total.

LAUNCH: MCC FCR-2 (15) FLT DURATION : - Launch occurred at 11:38:00.010 a.m. EST on 00:00:01:14 January 28, 1986. FLIGHT DIRECTORS : - Explosive burn at MET of 74 seconds. Asc - J. H. Greene S / T : 152:14:46:19 Ent - A. L. Briscoe FIRSTS: Ld/O 1 - B. R. Stone OV -099 : - First Shuttle launch from pad 39B. O 2 - C. W. Shaw 62:07:56:21 - First flight to use Casablanca as TAL site. Plng - C. R. Knarr - First flight to use DIAL-A-TAL site. MOD - D. R. Puddy