L 23 SUPER - BLANIK
686 04 KUNOVICE
CZECH REPUBLIC
SAILPLANE FLIGHT MANUAL
Do - L 23. 1012.5
4.1 INTRODUCTION
S e c t i o n 4 p r o v i d e s c h e c k l i s t s a n d i n f o r m a t i o n o n r e c o m m e n d e d
procedures for normal operation.
4.2 RIGGING AND DE-RIGGING
A. Wing removal
Four people are needed for the wing removal. The first holds the
fuselage, the second holds the wing tip, the third and the fourth hold the
wing root (see Fig. 8-1). Level the sailplane to the horizontal position.
Take off the fairings between the fuselage and the wing. Uncouple the
aileron control tie rods by unlocking safety pins and removing pins on
rocker levers, pivoted in consoles on the ribs No.1 (from the fuselage
side). Remove lock pins out of both front hinge pins and wing main pins
and knock out the front pin. Remove eletrical ground strap.
Move the wing gently up and down when installing or removing the pins.
Pull the wing from the fuselage by slow careful movement and sit the
wing vertically with the leading edge down on the special handling
equipment.
B Wing installation
The process of wing installation is the opposite. For easier installation
of the centre hinge pins use the centering pin (or installation drift
pin) before inserting the main pins (see Fig. 8-1, Detail A). When slipping
wing hinges on fuselage hinges make sure that the globular joint of the
air brakes control (see Fig. 8-1, Detail B) will be positioned to fit into the
control drivers in the wing.
When assembling first slide in the wing main hinge pin and then the wing
front hinge pin.
C Removal and installation of the wing tip extensions
Remove 12 bolts at the last wing rib fixing the wing tip and remove the
wing tip and/or wing tip extension.
Perform the installation in the reverse oder. Insert the extension and/or
by its guiding into the guiding tube at the last wing rig, adjust it in the
proper position and fix with original bolts (10 pieces of M4 sunk bolt and
2 p i e c e s o f M 5 f i t t e d b o l t w i t h c y l i n d e r h e a d ) a t b o t h t h e w i n g
ends. Tighten all the screws and bolts.
( Cont. )
Appr.
Dec 1/93
4 - 2