S 216-011-B00
 CAUTION: DO NOT PRESSURIZE THE AIRPLANE IF THE WARPS OR DEFORMATIONS
_______ HAVE AN EFFECT ON THE PRESSURE SEAL. THIS WILL REMOVE THE FAIL-SAFE PROPERTY OF THE WINDOW AND THE WINDOW CAN BREAK.
 (8)  Examine the middle pane for warps or deformations.
 NOTE: Warps or deformations usually occur in the middle pane where
____ the retaining clips are installed. Warps or deformations are waviness, twists, or bends in the window pane.
 The window does not have to be replaced if it has warps or deformations unless the warps or deformations have an effect on the pressure seal.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 56-21-00
 ALL  ú ú B02 Page 609 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 PASSENGER CABIN WINDOWS - APPROVED REPAIRS
__________________________________________
 1.  General_______
 A. Passenger Cabin Windows
 (1)  
Repairs with windows installed in the airplane are contained in this task. For window repairs on the bench, which includes repairs to the bevel edge and the seal plane, refer to Component Maintenance Manual, CMM 56-21-51.

 (2)  
You can sand, polish, or buff to remove damage in the passenger compartment windows. The damage conditions and limits are shown in the Passenger Windows - Inspection/Check.

 (3)  
To prevent more damage to the window wear clean cotton gloves.

 (4)  
Use only approved materials.

 (5)  
Make sure not to cause scratches to the window surface with finger rings or other sharp objects.

 TASK 56-21-00-308-001-B00
 2.  Outer Pane External Surface Repair__________________________________
 A. Equipment
 (1)  
Optical Micrometer - Model 966A or 966A1
 Monocle Industries

 P.O. Box 2426
 Coppell, Tx. U.S.A. 75019
 Tel (214) 393-9920
 Fax (214) 393-9926

 (2)  
Sanding Block - Rubber block of Shore-A Scale Durometer 35 Hardness (Optional: Wood Block with Several Layers of Flannel) (Commercially Available)

 (3)  
Sander, Vibrating - Air Driven (with rubber pad) (Commercially Available)

 B. Consumable Materials
 (1)  
Protective Coating - Spraylat SC-1071 (Ref 20-30-51)

 (2)  
Aluminum Foil Tape - Permacel P112 (Ref 20-30-51)

 (3)  
Protective Tape - Gizard Protex 20V (Ref 20-30-51)

 (4)  
Canton (cotton) flannel cloth, clean and oil free, any source

 (5)  
Chamois - KK-C-300 (Ref 20-30-51)

 (6)  
Buffing Compound - Learock No. 888 (Ref 20-30-31)

 (7)  
Buffing Compound - Learock No. S-30 (Ref 20-30-31)

 (8)  
Dustless Acrylic Window Cleaner (Ref 20-30-31)

 (9)  
Plex-I-Glow Cleaner and Polish (Ref 20-30-31)

 (10)
 Wet-or-Dry Sandpaper No. 600-A to 100-A

 (11)
 Micromesh Cloths 1600 thru 8000 grit - Kit SN2 (Ref 20-30-51)

 (12)
 Mirror Glaze Polish, MGH-10 (Ref 20-30-31)

 (13)
 Mirror Glaze Polish, MGH-17 (Ref 20-30-31)

 (14)
 Micro-Gloss Cleaner, (Ref 20-30-31)

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 56-21-00
 ALL  ú ú B01 Page 801 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 C. Access
 (1)  Location Zone
 324 Passenger Cabin

 D. Prepare for the Outer Pane External Surface Repair.
 S 228-002-B00
 (1)  Use the optical micrometer to find if the window thickness will permit repair.
 NOTE: the minimum pane thickness after repair must not be less than
____
 0.265 inch for all outer windows in the fuselage.
 S 218-003-B00
 (2)  
Make sure there is no damage to the seal.

 S 968-006-B00

 (3)  
If the window is not clear or seal damage is found, replace the window.
　
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