COMCO IKARUS
Maintenance Manual C42 Series
MaintenanceManual C42-
Series_Issue_VII_18.02.2014.doc
Revison No.:1 85 from 107
5.2.3 Rigging the Wings
Before attempting rigging, take a look at the wing roots and the way in which the
rigging mechanism works. Note that the fulcrum (the roller bracket) is located near
the wing root, and also in line with the rear spar attachment point. The front spar
attachment point however is located some way inboard. This means that lifting the
wing tip will result in the front spar clearing its fitting before the rear one. This can be
used to advantage during rigging.
Step 1. Ensure that the spar channels in the cockpit roof are aligned with the top
surface of the cockpit roof frame. Lock the controls, place the flap lever in
the fully up position and ensure the brake is on.
Step 2. Bring the left wing strut into its correct position on the left wing and attach
the auxiliary (jury) struts on the front and rear wing struts to the leading and
trailing edge fittings.
Step 3. If this is the first side to be rigged and the second wing half is still resting
on the tail, lift the wing at its tip with one hand. With the other hand,
steadily lift the tail so that the aircraft rests on its nosewheel.
Step 4. Carry the wing into its 90° position relative to the fuselage, taking care not
to damage the door and fuselage with the front spar.
Step 5. Turn the wing into a horizontal position and push it gently towards the
fuselage
Step 6. Lifting the tip, slowly insert the wing roots into position in their channels,
leading edge first. It may be necessary to gently rock and twist the wing to
engage the spar hooks on to their pins.
Step 7. Ensure that front and rear wing spars are properly engaged in their
channels. Then insert the lower end of the wing struts into the open box-
section end at the top of the shock absorbers.
Step 8. Attach front wing bolt and safety pin, using the tool provided.
Step 9. Attach rear wing bolt and safety pin.
Step10. Attach the strut bolt through the box-section end and lower steel block of
the wing struts ends. Install the safety pin.
Step11. Check that all three bolts have their safety pins installed.
Step12. As a final check, lift the wing at the wing tip to ensure proper attachment of
the wing strut block to the box-section end.
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