Ground Support Worldwide

APR 2013

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The operator makes the initial approach and stops 2-3 feet short of the nose landing gear. • The operator then opens the cradle by holding both the "cradle down" and the "cradle open" switch at the same time. Both switches are held until the cradle motion stops. Motion is stopped when the side cradle cylinders reach the end of their stroke. • The operator proceeds to move the vehicle forward and align the upper rollers with the ribs of the nose landing gear's tire tread. When the tires make contact with the rear cradle bar, the forward throttle shuts off. After lowering the cradle and opening the gates for capture, the operator safely moves the vehicle at "creep speed." • The operator then presses and holds the "cradle close" switch until the cradle motion stops. When the cradle gates swing past the 45-degree position, the parking brake on the vehicle is released. This allows the vehicle to roll in relation to the aircraft and avoid placing horizontal load on the landing gear. • Meanwhile, the cradle gates continue to close until hydraulic fuid fows over a preset relief valve, which stops the cradle motion. PHOTO: TRONAIR PHOTO: TRONAIR PHOTO: TRONAIR PHOTO: TRONAIR US Airways was Tronair's first customer to try out the JETPorter Softcapture at Reagan National Airport, Washington, D.C. Forward motion stops when the nose landing gear tires make contact with the front cradle safety bar. The cradle can be closed and the aircraft raised for pushback or tow. • The operator then presses the "cradle up" switch until the cradle motion stops. The cradle tilts to a 15-degree angle. Between 13 degrees and 15 degrees, the cradle makes contact with the proximity switch. Also, the upper hold-down arms lock in place between 13 degrees and 15 degrees. The fully raised cradle takes the vehicle out of "creep speed." Once the aircraft is taken to where it needs to be, the driver presses the APRIL 2013 • 7

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