4. Apply Antistatic Agent to Windowpanes
A. Soak boiled cheesecloth with antistatic solution and apply to inner surface of outer pane, both surfaces of middle pane, and outer surface of inner pane.
B. Allow surfaces to dry, then polish with boiled cheesecloth using brisk straight motions of the hand and maintaining as light a pressure as possible.
NOTE: Do not wet or mar window surfaces after treatment. Antistatic solution is water soluble.
5. Restore Airplane to Normal Configuration
A. Install window assembly (Ref Passenger Cabin Windows -Removal/Installation or Emergency Exit Hatch Window -Removal/Installation, 56-22-0).
B. Install sidewall lining (Ref Chapter 25, Passenger Cabin Lining and Installation).
6. Application of Wax Coating
A. Clean outer surface of outer pane as in step 3.C.
B. Apply wax to surface of window and polish lightly with flannel cloth.
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PASSENGER CABIN WINDOWS - REMOVAL/INSTALLATION
1. General
A. In converting from a passenger cabin window installation to a window plate (plug) installation, remove passenger cabin window as described in par. 4. To install window plug refer to 56-21-11 R/I.
B. When a passenger cabin window is removed for repair, the same precautions should be observed in handling, storage, and packing of the window as were observed for the new window. The window removed from the airplane should be placed in the same package in which the new replacement window was received.
2. Equipment and Materials
A. Cellulose Acetate Sheeting, Permacel Tape No. 76, Minnesota Mining and Manufacturing Tape No. 221 or Transparent Cellophane No. 600, Spraylat SC-1058R (Ref 20-30-51)
B. Masking tape (Ref 20-30-51)
C. Wooden or plastic scraper
D. Sealant - BMS 5-44 Class B (Ref 20-30-11)
E. Cheesecloth
F. Cement - BMS 5-55 (Ref 20-30-11)
G. Aliphatic Naphtha - TT-N-95A, Type II (Ref 20-30-31)
NOTE: Freon-TF may be used in lieu of aliphatic naphtha, TT-N-95A, Type II, for general cleaning of windows.
H. Castile soap
I. Aluminum oxide paper - 400 grit
J. Liquabrasive - 140 grit, Wheelabrator Corporation
K. Aluminum oxide cloth - 180 grit
L. Angular steel grit - G-80, Panchorn Corporation
3. Prepare Passenger Cabin Window for Removal
A. Remove sidewall lining (Ref Chapter 25).
NOTE: Use care in handling plastic reveal. Surfaces visible to cabin interior must be free of marks, scratches, and dents.
B. Apply protective covering of cellulose sheeting to accessible surfaces of window panes which are to be removed and reinstalled. Secure cover with masking tape if necessary.
4. Remove Passenger Cabin Window
A. Remove clip adjusting screws (5, Fig. 401) and window retaining clips (4).
NOTE: Note location of removed clip for aid in installation.
B. Remove window as a unit from window frame.
CAUTION: IF WINDOW IS TO BE REINSTALLED, A PROTECTIVE COVERING OF CELLULOSE ACETATE SHEETING MUST BE APPLIED TO ACCESSIBLE SURFACES TO PREVENT DAMAGE DURING HANDLING.
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C. Examine window assembly seals for damage and disassemble if the seals are torn or damaged in any way.
(1) Remove the seal/spacer (10, detail B) from the windowpanes (3 and 7).
CAUTION: IF PANES ARE TO BE REINSTALLED, A PROTECTIVE COVERING OF CELLULOSE SHEETING OR EQUIVALENT, MUST BE APPLIED TO SURFACES TO PREVENT DAMAGE DURING HANDLING.
D. Examine forging toe for nicks or gouges. If any damage is detected, it should be blended out (Ref Structural Repair Manual).
5. Prepare Passenger Cabin Window for Installation
A. Prepare the seal/spacer (10, Fig. 401, Detail B) and the outer and middle windowpanes (3 and 7) for installation as a unit, as follows:
(1)
Clean faying surfaces of seal and window frame with aliphatic naptha.
(2)
Remove protective cover, clean, and apply antistatic agent to exposed surfaces of each windowpane.
(3)
Assemble outer windowpane (3), with part number at the top of pane, and the middle windowpane (7), with breather hole (6) at bottom of the pane, and the seal/spacer (10) as a unit.
6. Install Passenger Cabin Window
A. Clean accessible areas around opening between outer and inner pane (Ref 12-40-0).
B. Apply a soap and water solution to the edge of the seal for easy installation.
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