Remove the already inserted pin in the adjusted stabilizer leg and re-install it and the
retaining clip to secure the stabilizer leg in position and retain the A-frame horizontal.
Make sure the slide frame remains clear of the launch vehicle chassis.
At the A-frame stabilizer controls, lower the A-frame stabilizer leg until it sits on the locking
Figure 3. 22 A-frame Stabilizer Controls
Slide Frame Decking Panel Deployment
Release the retaining straps and clips from both the outer A-frame legs and using the
ladder, lower the outer A-frame platforms so that they rest on their location brackets.
Remove the platform safety rails from their stowage locations. Extend the access ladders
and adjust the stile extensions on the ends of the ladders to account for any ground
variations. Unfold the two walkway extension pieces and position and pin the safety rails
in the two location holes in the folding walkways.