MDM MDM-1 FOX, Flight Manual

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MDM-1 „FOX” FLIGHT MANUAL
Appr. 4.3
Issue III
4.2.2 De-rigging the wings.
Two persons hold the glider at the wing tips.

Remove the safety pins, unlock the main bolts rotating downwards the safety devices, protecting the
bolts against shifting-off. (The safety pins and devices are located at bolt front face, accessible
from the cockpit inside).

Insert the steel pin of assembly wrench into the hole on the main bolt base.

Unload the bolt by lifting the wing tips slightly and remove the bolt with advance-rotary motion.
Repeat the same procedure for the other bolt.

Lift one wing at its root, holding it at the leading edge and at the vicinity of rear fitting, as well as at
the tip, shove it out of the fuselage. The aileron and air brake control system of the de-rigged wing
will disconnect automatically. One person firmly holds at the tip of the opposite wing.

Shove the wing out of the fuselage.

Remove the second wing in the same way. One person holds the fuselage at the fin or at cockpit side
rim to secure it against tipping over.

The main bolts should be inserted back into the fuselage main fittings, and secured by rotating the
safety device upwards into vertical position (to avoid losing of the bolts).
4.2.3 Final remarks.
The rigging of the glider requires the reversed sequence, preferably with 5 persons.
All mating surfaces, main bolts and sleeves should be dried and re-greased.
NOTE: Glider rigging should be supervised by a rigger, acquainted with servicing a glider of
this type.
7
Rev. 7/ June 2019