P92 Classic Jabiru
M a i n t e n a n c e M a n u a l
AIRFRAME
Page C-3
Date
:
Issue 3: 4
th
July 2011
Section C
Aileron is constructed of a single light alloy spar to which are joined box type leading
edge and ribs; entire structure is covered with “Dacron” synthetic cloth. Flap has the same
aileron structure and is covered aluminum panels.
Wing tips (3) are molded epoxy resin, fiberglass reinforced.
3 - REMOVAL AND RE-INSTALLATION OF A WINGS
Procedure for removal of a wing and strut is as follows.
A.
Drain fuel tank using drain tank and closing opposite side tank fuel circuit;
B.
Remove access panel located under the wing allowing access to fuel line and discon-
nect, plug pipe ends on both wings;
C.
Disconnect transparent scavenge small pipe only LH wing;
D.
Disconnect wires for navigation lights (if present);
E.
Disconnect flap control (see fig. C-3) by removing roller bearings (7) linking push-
pull rods (6) with flap control plate;
F.
Remove aileron control (see fig. C-4) by disconnecting pins (4) linking small bar (3)
with rods (5).
G.
While supporting the wing’s end, release strut’s upper pin, then release lower pin and
remove strut.
H.
While supporting the wing from below the root area, release the two wing-to-fuselage
attachment pins. To expedite release of aft pin, keep flap lifted, then remove wing.
I.
Replace pins.
Reverse above procedure for reinstallation paying close attention to tighten strut’s bolts to
recommended value (M8 bolt torque 24.6 Nm).
2.1 - Flap control
(see fig. C-3)
Flap control system is push-rod type. The torque tube (1), connects the two moving sur-
faces and hinges to supports (2) rigidly attached to fuselage structure. Rotation is trans-
mitted through a push-rod (3) whose position is controlled by an electric linear actuator
(4) governed by a switch on dashboard. Jack stops are adjusted by moving the switches
locate inside the flap actuator body (4).
Two push-pull rods (6) are connected to the ends of the torque tube (see fig. C-3) (1) al-
lowing quick inspection owing to favorable location between wing and fuselage.
The two push-pull rods controlling flap movement feature an extendible linkage just be-
fore the roller bearings allowing trailing edge line-up.
