fixed to the main leg with 3 flexible joints. Smaller doors are fixed
to the bigger ones with hinges. A steel spring pulls them into the
correct position when closed. In addition, if doors are in the
retracted position, they are locked with hooks and brackets to
prevent them from being sucked out of the closed position at
higher airspeeds. The proper closed position is indicated by a green
LED visible in the gear inspection windows. When operating in
mud, snow, or in wet and freezing conditions it is recommended to
remove the doors and fly without them. If there are any doubts
about correct adjustment and function of the doors as
malfunctions of the doors carries a risk of causing malfunctions in
the landing gear locking mechanism.
Extension, retraction and Indications of the landing gear
The Landing Gear is controlled by an electronic module placed
behind the instrument panel on the BRS wall together with other
electronic modules. Other components of the system are:
• relay switching voltage to the servo of the main landing gear
• control and display panel, on the instrument panel, associated
with flaps control panel
• pressure sensor set to 120km/h (65 kts), providing signal to
control unit
• warning horn
• contactless inductive position sensors, placed in the landing
gear bays, providing information about landing gear status
• a second control and display panel can be optionally placed on
the rear instrument panel
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