MD Helicopters 369-500, Maintenance Instructions Manual

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CSP-HMI-3
MD Helicopters, Inc
.
MAINTENANCE MANUAL
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96-45-00
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Revision 11
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Neither this document nor any part hereof may be reproduced or transferred to
other documents or used or disclosed to others for manufacturing or any other
purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright
©
1999 − 2016 by MD Helicopters, Inc.
E. Stowage Compartment Lower Support
Modification
(Ref. Figure 901)
Consumable Materials
(Ref. Section 91 − 00 − 00)
Item Nomenclature
CM425 Sealing compound
CM438 Adhesive, epoxy
CM614 Sleeving, heat-shrink
(1). Position doubler on outer ship skin to
match cutout. Use doubler as template,
and determine 29 rivet hole locations
required through ship skin. Drill
twenty 0.098 inch (2.4892 mm) rivet
attach holes around circumference of
doubler and nine 0.098 inch (2.4892
mm) holes around circumference of
cutout. Attach doubler to skin with
rivets.
NOTE:
Doubler is provided with a 2.50 inch
(6.35 cm) cutout, 29 rivet attach holes and a
drain hole cutout.
(2). Using drill motor and appropriate drill
bit, drill 0.180 inch (4.572 mm) drain
hole in ship skin to match doubler.
(3). Position channels over existing rivet
attach holes in ship skin, compartment
frame, and aft bulkhead. Left channel
should abut cutout in ship skin, and
right channel should be 3 inches (7.62
cm) outboard of left channel. Drill 0.098
inch (2.4892 mm) rivet attach holes
through channels and doubler as shown
in Figure 901. Attach channels to
frame, bulk head, and doubler with
rivets (Ref. Figure 201).
NOTE:
Do not install rivets through attach
holes required for securing support to chan­
nels at this time.
(4). Using existing holes in compartment
frame as template, drill four additional
0.098 inch (2.4892 mm) rivet attach
holes through doubler . and secure
doubler to frame with rivets as shown
in Figure 901.
(5). Position support over existing rivet
holes in channels and against compart­
ment frame. Drill four 0.098 inch
(2.4892 mm) rivet attach holes in
support for attachment to channels,
and five 0.098 inch (2.4892 mm) rivet
attach holes for attachment to frame as
shown in Figure 901. Attach support to
frame, channels, doubler, and ship skin
with rivets (Ref. Figure 201).
(6). Position angles on channels against
compartment frame. Drill six 0.098
inch (2.4892 mm) rivet attach holes
through angles and frame. Attach
angles to frame with rivets.
(7). Position bracket in left channel, left
angle , and support. Drill four 0.098
inch (2.4892 mm) rivet attach holes
through channel and bracket, and one
0.098 inch (2.4892 mm) rivet attach
hole through top of support and
bracket. Drill additional two 0.1285
inch (3.2639 mm) rivet attach holes
through left angle, left channel, and
bracket. Attach bracket to left channel
and support with rivets. Also attach
bracket to left channel and left angle
with rivets.
(8). Position right bracket in right channel,
right angle and support. Drill from
0.098 inch (2.4892 mm) rivet attach
holes through right channel and
bracket, and one 0.098 inch (2.4892
mm) rivet attach hole through top of
support and bracket. Drill additional
0.1285 inch (3.2639 mm) rivet attach
hole through right angle, right channel,
and bracket. Attach bracket to right
channel and support with rivets. Also,
attach bracket to right channel and
right angle with rivet.
(9). Use support as template and deter
mine attach hole locations required for
nutplates on bracket. Drill four 0.098
inch (2.4892 mm) rivet attach holes
through bracket. Attach two nutplates
on bracket and support with rivets.
Also, attach two nutplates on support
with rivets.
(10). Position angle on right channel and
determine attach hole locations. Drill
six 0.098 inch (2.4892 mm) rivet attach