CSP-HMI-3MD Helicopters, Inc.
MAINTENANCE MANUAL
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[ Chapter 95 TOC ]
95-10-10
Page 905
Revision 7
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purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright © 1999−2016 by MD Helicopters, Inc.
F. Heated Pitot Tube Installation (Round
Nose)
(Ref. Figure 201)
Consumable Materials
(Ref. Section 91−00−00)
Item Nomenclature
CM601 Insulation sleeving, electrical
(1). Carefully slide rear of pitot tube
through grommet in canopy panel,
wires and pressure tube first.
(2). Run pressure tube and wires through
hole in web and doubler.
(3). Assemble rear of pitot tube and clamp
as shown.
(4). Adjust clamp and pitot tube on angle,
utilizing elongated hole in angle to
accomplish seating of pitot tube on
position key.
(5). Tighten clamp.
(6). Using same bonding compound used to
bond canopy panel grommet (Ref.
Canopy Panel Grommet Replacement
(Procedure Using A-4000 Adhesive) or
Canopy Panel Grommet Replacement
(Procedure Using Silastic 140 Adhe
sive)), add compound around inner side
of grommet and pitot tube to provide
airtight seal.
(7). Remove five screws securing left and
right lower section panels of instrument
panel lower support assembly (Ref. Sec.
95-00-10). Remove panels.
(8). Connect pressure tube to new heated
pitot tube.
(9). On right side, find wire F504B16,
unsheath knife splice terminal, and
solvent-wash terminal as required.
NOTE: Wire F504B16 is bundled with wires for
the landing light solenoid, which is mounted
on the right lower section panel.
(10). Slip two-inch number 4 insulation
(CM601) over red wire, and connect red
wire to F504B16.
(11). Slip insulation over splice, and seal at
both ends with MS3367-1-9 straps.
(12). Pass black wire rearward through hole
in lower section floor support bulkhead
to left side of electronics compartment.
(13). Raise copilot's heel strips and electron
ics compartment access door assembly,
and attach black lead to ground
terminal E24.
(14). Replace left and right lower section
panels of instrument panel lower
support assembly.
(15). Attach WARNING decal 2-2.25 inches
(5.08-5.715 cm) above landing light
(Ref. Figure 904).
(16). Install new pitot tube cover assembly.
G. Heated Pitot Tube Installation (Extended
Nose)
(Ref. Figure 202)
(1). Carefully slide rear of pitot tube
through grommet in canopy panel,
wires and pressure tube first.
(2). Assemble clamp over rear of pitot tube
and install on support bracket using
NAS603-8P screw, NAS603-12P screw,
two AN960PD10L washers, two
HS306-23 washers, and two
MS21042-3 nuts.
(3). Adjust angle of pitot tube in clamp
utilizing elongated hole in grommet.
(4). Tighten clamp.
(5). Using same bonding compound used to
bond grommet to canopy panel (Ref.
Canopy Panel Grommet Replacement
Procedure Using A-400 Adhesive or
Canopy Panel Grommet Replacement
Procedure Using Silastic 140 Adhesive),
add compound around inner side of
grommet and pitot tube to provide an
airtight seal.
(6). Run pressure tube along same route as
original unheated pitot tube pressure
tube, and secure using existing clamps.
(7). Attach one end of jumper to ground
stud (E54) on lower section of instru
ment panel support and install
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