Wills Wing Alpha 180 Owner's Service Manual page 18

While pushing up on the leading edge between the nose and the crossbar junction, step on the
bottom side wire with about 75 lbs. of force. This is a rough field test of the structural security
of the side wire loop, the control bar, the kingpost, and the crossbar, and will likely reveal a
major structural defect that could cause an in-flight failure in normal operation.
At the left wingtip
Check the proper installation of the number one batten, and the sail mount webbing.
Along the trailing edge, left wing
Check that there are no tears in the sail material along the trailing edge.
Check that all batten strings are secured
Check that the bridles are properly engaged, with the plastic retainer balls fully seated against
the grommet and that no bridle cable is hooked underneath a more inboard batten.
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