LAUNCH OF BRIDGE (Contd)
During launch step L13-H, once the upper bridge half is
lowered, observe the lower support boom lift the lower
bridge half. When step is completed, the lower couplings
of the upper bridge half should rest on the coupling help
levers of the lower bridge half, and the crossforce
couplings of both bridge halves should be aligned close
together. If not, upper bridge half may be hung up on
forward pinwheel drive gear. Refer to
39. Depress LAUNCH button (2) to confirm and step into next function.
40. Depress and hold ACTION 1 button (1) to L13-H-LOWER SECONDARY
BOOM, and observe secondary boom lower upper bridge half (3) to pre-
coupling position with lower bridge half (4).
41. Depress LAUNCH button (2) to confirm and step into next function.