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Volume 2-757
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Page 1 OCT 01/00
CORROSION PREVENTION MANUAL
DOORS
AREA PROBLEM Corrosion of inside surface and keel beam ofmain wheel well INDEX PREVENTION VOLUME2 53-40-01 TERMINATING ACTION (IF ANY)
Corrosion of emergency exit doorstructure 53-40-01
Corrosion of fairing skin and strucure 53-40-01
Section 46 Corrosion of interior structures 53-60-01
Plugged drains 53-60-01
Corrosion of door surrounding structures 53-60-01
Corrosion ture of interior cargo compartment struc- 53-60-01
Corrosion of fairing skin and strucure 53-60-01
Corrosion of stringers, doubters,panels, splices and fillers in cargo compartment 53-60-01
Corrosion 1716.30. of panels aft of galley gutter STA 53-60-01
Aft Pres-sure Bulk-head Corrosion of pressurebulkheadfore and aft
Section 48 Corrosion of interior structures
Fuselage Skin Lap Joints Galley and Lavatories Corrosion Corrosion ries of external/internal lapjoints of structure undergalleys and lavato-
SPECIFIC CORROSION PROBLEMS -FUSELAGE Figure 1 (Sheets 1 -2)
Volume 2-757
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Page 2 OCT 01/00
CORROSION PREVENTION MANUAL
FUSELAGE -SECTION 41
1. General
A. The fuselage is of semimonocoque construction divided in five sections. The
first forward section is Section 41 extending from stations 190 to 440. The
fiberglass radome is hinged at the top of the forward pressure bulkhead. Aft
of the forward pressure bulkhead are the flight compartment and nose gear
wheel well. Structural openings in Section 41 include flight compartment and
passenger doors, and forward access door. Additional stringers, frames, and
skin double reinforced windows and doors.
B. The fuselage skin was installed with butt joints and longitudinal lap joints
that were generally flush riveted. Corrosion protection consists of anodize
surface treatment or chemical conversion coating on aluminum structure and a
coat of BMS 10-11, type 1, primer. The faying surfaces at skin laps and cir-cumferential skin splices are either bonded or fay surface sealed. All
non-aluminum fasteners which penetrate the exterior skin are installed with
wet sealant. A coat of sprayable sealant is applied to the inboard flange of
stringer 10 and above. A coat of BMS 3-23, type II corrosion inhibiting com-pound is applied to all structure within 2 inches of the body skin, and the
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