ICA-D212-725 (52
)
Page 52 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
52.7.5.3 Repair
Repair windows in accordance with Figure 52-12
and FAA Publication 43.13-1B, Aircraft Inspection
and Repair.
52.7.5.4 Installation
SPECIAL TOOLS REQUIRED
NUMBER NOMENCLATURE
CP 293
Locking Strip (Filler) Insertion
Tool
LT112
Retainer Installation Tool
MATERIALS REQUIRED
Refer to BHT-ALL-SPM for specification and
source.
NUMBER NOMENCLATURE
C-300 Adhesive
C-305 Aliphatic
Naphtha
C-306 Toluene
C-307 Silicone
Adhesive
C-316 Acetone
C-337 Sealant
C-347 Xylene
C-363 Adhesive
C-423
Abrasive Cloth or Paper
C-426 Masking
Tape
C-516 Clean
Cloth
52.7.5.4.1 If the window was removed to perform
a structural repair that may have affected the
window opening, measure window opening. Trim
opening as required to the following dimensions
(±0.03 inch (±0.8 mm)):
- for aluminum doors, window opening is 28.00
inches (71.1 cm) wide by 23.14 inches (58.8 cm)
inches high (Figure 52-13)
- for composite doors, window opening is 28.00
inches (71.1 cm) wide by 28.09 inches (71.3 cm)
inches high (Figure 52-13)
CAUTION
ENSURE WINDOW FRAME IS CLEAN AND
COMPLETELY FREE OF ANY PAINT FINISHING
MATERIALS
NOTE
Helicopter finishes will not adhere to surfaces
where primer and adhesive are applied.
NOTE
Window opening must be in a protected area,
shielded from wind, rain or other adverse
environment conditions during installation.
52.7.5.4.2
Following applicable trimming or
initial preparation, remove all residue using a
clean cloth (C-516) moistened with toluene (C-
306), xylene (C-347), or acetone (C-316). Wipe
dry with a clean cloth (C-516).
52.7.5.4.3
Temporarily position new retainer
(seal) (6) in window frame (5) opening.
52.7.5.4.4
With the new retainer (seal) (6)
positioned in place, apply masking tape (C-426)
around its periphery to the surface of both sides
of the door. Remove the retainer.
52.7.5.4.5 For composite doors, apply
adhesive (C-363) to the trimmed edge of the
window frame (5) opening. Allow to dry for 6
hours at room temperature before installing
retainer (seal) (6).
52.7.5.4.6 For aluminum doors, apply
sealant (C-337) within masked area of window
frame (5). Allow to dry 30 minutes before
installing retainer (seal) (6).
52.7.5.4.7
Prepare and fit new retainer (seal)
(6) in window frame (5) as follows:
52.7.5.4.7.1 Abrade retainer groove (4) with
grit 80 grit abrasive paper (C-423).
52.7.5.4.7.2 Clean
retainer groove (4) with a
clean cloth (C-516) dampened with toluene (C-
306), xylene (C-347), or acetone (C-316). Wipe
dry with a clean cloth (C-516).
NOTE
Retainer filler groove (2) shall be positioned
outboard.
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