Leerjet 35/36 Developed for Training Purposes 4E-7
February 1998
Flight Controls
Secondary Flight Controls
Secondary flight controls include the flaps and spoilers, which
are electrically controlled and hydraulically operated.
Flaps
The single-slotted Fowler flaps are electrically controlled and
actuated by dual hydraulic actuators.
Full flap travel is from 0 to 40× ( + 5×, - 0×), and interconnecting
cables and pulleys synchronize flap movement (within 2× of
each other) throughout the range of flap travel. The standard
flap switch, labeled UP/OFF/DN, allows the pilot flap control to
any desired setting throughout their range of motion. After
attaining the desired flap setting, placing the switch in the cen-
ter (OFF) position, de-energizes the control valve, which cre-
ates a hydraulic lock holding the flaps in position. A flap
position indicator on the instrument panel provides a visual ref-
erence of flap position.
A pre-select flap control, installed on all FC-530 equipped air-
craft and some FC-200 aircraft, allows the pilot to position the
flaps at 8 or 20× without continuously holding the select switch
up or down. Additional flap control switches deenergize the flap
control valve when the flaps reach the pre-selected position.
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