Anonymous ID: 6f46b9 Feb. 9, 2019, 6:23 p.m. No.5099360   🗄️.is 🔗kun   >>9471

We are in this stage.

T-9 minutes and counting

Start automatic ground launch sequencer

Retract orbiter access arm (T-7 minutes, 30 seconds)

Start auxiliary power units (T-5 minutes, 0 seconds)

Arm solid rocket booster range safety safe and arm devices (T-5 minutes, 0 seconds)

Start orbiter aerosurface profile test, followed by main engine gimbal profile test (T-3 minutes, 55 seconds)

Retract gaseous oxygen vent arm, or "beanie cap" (T-2 minutes, 55 seconds)

Crew members close and lock their visors (T-2 minutes, 0 seconds)

Orbiter transfers from ground to internal power (T-50 seconds)

Ground launch sequencer is go for auto sequence start (T-31 seconds)

Activate launch pad sound suppression system (T-16 seconds)

Activate main engine hydrogen burnoff system (T-10 seconds)

Main engine start (T-6.6 seconds)