Drogue Chute Installation
As determined by ground crew, a drogue chute may be
attached to the damaged helicopter to facilitate stable flight.
(1) Secure drogue chute to the tail end of tail-boom. Do not deploy drogue chute until recovery helicopter
has hovered over disabled or damaged helicopter.
7. Install Forward Main Rigging (Figures 1, 2 and 3, and Table 3)
a. Remove the pilot and co-pilot doors, and remove the left and right cargo compartment doors.
b. Basket a blue/white sling (6) through the pilots door opening and out the cargo door that is on the same side
of the helicopter.
c. Basket a second blue/white sling (7) through the co-pilots door opening and out the cargo door that is on the
same side of the helicopter.
d. Separately lay both eyes of slings (6) and (7) on the rotor head for easy access during shackle assembly
hook-up in step g. of this Paragraph.
e. Install the OH-58A/C mast wedge assembly (8) in accordance with Figure 1, View A location, and Figure 2, as
UMARK contains two similar mast wedge assemblies for
different helicopters. Refer to WP 0001 00 of this manual
and verify that correct mast wedge assembly is in use.
(1) Open the mast wedge (Figure 2) rubber tube section along the centerline seam and install the rubber
tube section around the main rotor mast near the bottom of the main rotor hub assembly.
Figure 2. OH-58A/C Mast Wedge Assembly
When installing mast wedge assembly it may be necessary
to slightly rock blades using fixed length tie-downs attached
to blade sleeve assemblies to place wedge assembly in
(2) Carefully slide the tube up into the gap between the main rotor hub and the main rotor mast.