From observing cabin crew in action, The the crosscheck is done immediately after the disarm but before aircraft door is opened.
Apparently the rapidly inflating slide can do a lot of damage to a person in its path. Just like an airbag.
There was no Jetstar stairs in the picture. Would the door be normally only opened when the stairs is in place first. Either the door was opened inadvertently before the stairs had arrived or the stairs were removed before the picture was taken, otherwise we would have seen a picture like the one with the slide pointing up in the air.
A bit bit of trivia, how does the slide inflate so quickly with so much air?. There is no air pump small enough but powerful enough to inflate a slide in 6 seconds , just a small canister of CO2 or N2 with an expanded volume inadequate to complete fill and pressurise the slide???. It's a known effect named after its discoverer. Anyone??
