MD Helicopters CSP-900RMM-2, Servicing And Maintenance

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CSP − 900RMM − 2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 5/(6 blank)
Original
53-10-00
C. Tub Forward Skins
The tub forward skins are primary structural
components that support the lower outboard
edges of the chin windscreens and attach the
lower nose panel. The left and right skins are
attached to the lower portion of the cockpit
assembly, the general tub assembly, the
plough beam assemblies, and the tub shell by
rivets.
The tub skins are fabricated as a monolithic
laminate that incorporates multiple plies of
graphite/epoxy and barrier plies of fiberglass/
epoxy cocured as a monolithic laminate.
Around the periphery the panel transitions to
a monolithic laminate. A ply of Astrostrik
is
cocured to the exterior surface of the panel.
D. Lower Nose Panel
The lower nose panel is a secondary structural
shear panel. This panel is installed below the
landing light window between the left and
right tub forward skins. This component is
attached to the tub forward skins, the plough
beam assemblies, and the tub shell of the
general tub assembly by rivets. The lower nose
panel also attaches the lower edge of the
landing light window.
The lower nose panel is fabricated of multiple
plies of graphite/epoxy and barrier plies of
fiberglass/epoxy cocured with a syntactic epoxy
foam core. Around the periphery the panel
transitions to a monolithic laminate. A ply of
Astrostrik
is cocured to the exterior surface
of the panel.
E. Lower Fillets
The left and right lower fillets are secondary
structural components that complete the joints
between the cockpit door pillars and the
cockpit sills. The fillets are fabricated from
aluminum alloy sheet and fastened with
rivets.
F. Landing Light Window
The landing light window is an acrylic
transparency located on the forward, lower
portion of the cockpit assembly. The window is
installed with a seal between the window and
the chin bow assembly. Retention of the
window is by machine screws, packings,
washers and self locking nuts.
G. Attachment Angles, Cleats, and
Reinforcing Strap
The attachment angles, cleats, and reinforcing
strap are secondary structural components.
These components are fabricated from
aluminum alloy sheet and fastened by rivets
and pins and collars.
H. Cockpit Upper Door Seals
The cockpit upper door seals are non-structur­
al components that provide the seal between
the cockpit door and the cockpit door frame.
The upper cockpit door seals are rubber and
are bonded to the land on each door pillar.