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STS-3 DEBRIEF • APU 3 WSB froze [[margin note 1]] during pwr'd flight - shut down APV 3 [[margin note 2]] after single engine pres (~30 sec before MECO)- hydraulic lock-up @ 82% - engine very stable...looked real good. Gordo was able to monitor APU, & shut down - thinks RTLS dump procedure should be re-worked. • Vibration started at SSME ignition (not SRB) • noticed wind noise •white colored debris (left smears on windshield) •SRB sep - no noise, vibration..just brilliant flash • ET sep - only clue: 3 red lights going out • dP/dT alarm: ECR to change limit by -5 or -6 EVAC OUT light •gang-start of APU's prelaunch worked great Post-insertion • theodolite : numbering system bad, tgts hard to see, order bad (start with 3, then work aft). had to use flashlight - it burned out ~15 min. Action to techniques: do we need to do this on ST3-4? Sun curled [[?]] off some of numbers after 3 days nose sun No deflection in any PLBD case. • Shoulder brace rel took ~4 sec for t-b gray (Gordo expected 2 sec .... nominal is ~7-9 sec) [[margin note 1]] .15# H2O left for launch [[margin note 2]] SYS -4# 2-3# 3-.15#