Eagle ICA-D212-725, Инструкция по эксплуатации

Страница: 299 / 729

ICA-D212-725 (52
)
Page 48 of 54
CHAPTER 52 – DOORS AND WINDOWS (52-00-00)

COPYRIGHT

2007 BY DART AEROSPACE LTD.

THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO
ANY OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision: 4
Date: 11.06.01
52.7.3 Lower Nose Section Windows
The lower nose windows (Figure 52-11) are made
of clear acrylic.
52.7.3.1 Removal
52.7.3.1.1 Remove nuts, washers, and screws
attaching windows (7, Figure 52-11) to roof
structure.
52.7.3.1.2 Separate window from sealant and
remove window from helicopter.
52.7.3.2 Inspection and repair
52.7.3.2.1 Inspect windows to damage limits
shown in Figure 52-12.
52.7.3.2.2 Refer to FAA Publication AC 43.13-
1B, Aircraft Inspection and Repair, for repair
methods.
52.7.3.3 Installation
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-305 Aliphatic Naphtha
C-308 Adhesive
52.7.3.3.1 Prior to installation of lower nose
section windows (7, Figure 52-11), wash windows
with a mild detergent and water solution. Dry with
a soft dry cloth.
52.7.3.3.2 Remove old sealant from mounting
flange with putty knife, spatula, or other suitable
tool.
CAUTION
WHEN CLEANING WINDOWS AND FLANGES,
USE ONLY ALIPHATIC NAPHTHA, TYPE II (C-
305). DO NOT USE ALIPHATIC NAPHTHA,
TYPE I, AS IT WILL CLOUD WINDOWS.
52.7.3.3.3 Wipe and clean mounting flange with
a cloth moistened in aliphatic naphtha (C-305). If
an old window is being installed, clean edges of
window using naphtha.
52.7.3.3.4 Position a new window over
opening. Trim surplus edge to permit window to
be in mounting position against flange.
NOTE
Do not trim window to final size until all mounting
holes have been drilled.
52.7.3.3.5 Position window against mounting
flange and using a 0.208 to 0.214 in. (No.4)
diameter drill, back drill two holes in edge of
each window.
52.7.3.3.6 Secure window to mounting flange
with four dural screws, washers, and nuts.
Lightly tighten screws. Finish drilling holes in
window.
52.7.3.3.7 Determine proper edge distance
and mark window. Remove window and trim to
1.04 in. (26.42 mm) edge distance.
CAUTION
WHEN CLEANING WINDOWS, USE ONLY
ALIPHATIC NAPHTHA, TYPE II (C-305). DO
NOT USE ALIPHATIC NAPHTHA, TYPE I, AS
IT WILL CLOUD WINDOWS.
52.7.3.3.8 Remove all dust and foreign matter
from window mating area and from window
mounting flange using aliphatic naphtha (C-305).
52.7.3.3.9 Apply a 0.125 in. (3.18 mm) wide
bead of adhesive (C-308) around window.
52.7.3.3.10
Position window in mounting
flange, align holes, and install screws, washers,
and nuts.
52.7.3.3.11 Remove excess sealant from
around window.
52.7.4 Crew Door Windows
Three separate windows are installed in each
crew door (Figure 52-11); a forward window, a