Technical data

13773-001
56-20
Page 530 Nov 2000
Note: Exercise care to protect the inner and outer window surfaces from damage
during the installation process. The stepped area on the edge of the window
(which is bonded to the fuselage) is called the bonding flange.
(b) Verify that sealant is within storage-life requirements.
(c) Inspect fuselage bonding flange for any remaining sealant or contaminates, remove and
clean as necessary.
(d) Remove the protective covering from the window and inspect the window for damage or
defects, never install a defective window.
(e) Install a continuous piece of fine line tape on the edge of the fuselage window opening
(next to the bonding flange). (See Figure 56-202)
(f) Working in one direction on the fuselage window opening, place 2-inch masking tape on
top of the outer edge (the edge furthest away from the bonding flange) of the fine line tape.
Note: The masking tape will provide a smooth and continuous parting line at the
bonding flange.
(g) Make a directional mark on the masking tape to indicate the proper direction for removal.
(See Figure 56-203)
(h) Apply three coats (in opposing directions) of protective coating (AC-940 Blue) on the outer
window surface.
CAUTION: Do not apply protective coating on the window bonding flange.
(i) Using several pieces of duct tape, make handles on the exterior of the window after the
protective coating has fully cured.
(j) Place window into position and secure the window into the fuselage using padded cargo
rods. (See Figure 56-203)
Primer MC-145 LP Aero Plastics
Rd#1 Box 201-B
Jeannette, PA
15644
Aid in adhesion
Protective Coating AC-940 Blue
AC Products, Inc.
172 Ela Jolla St.,
Placentia CA
92670
Prevent damage to
the window
Fine Line Tape (pin strip-
ping)
1/4-inch
3-M
Allow smooth transi-
tion between fuse-
lage and window
Aluminum Oxide Paper 80-grit or finer
Any Source
Abrade acrylic sur-
face prior to adhe-
sion
Description P/N or Spec. Supplier Purpose