THIS TOP COATING SHALL INCLUDE PARTS WHICH WERE PERVIOUSLY COATED WITH F19.22
VENT STRINGER REWORK - CORROSION PROTECTION
ALL INTERIOR SURFACES OF STRUCTURAL VENTS (OPTIONAL USE OF EC776SR, APPLIED PER BAC5741, FOR FINISH
TOUCH-UP ON INTERIOR SURFACES OF THE STRUCTURAL VENTS ONLY)
SPARS - CORROSION PROTECTION
APPLY CORROSION PREVENTIVE FILLET SEALING TO EXTERIOR SURFACES OF FRONT AND REAR SPARS PER 65-47802,
64-47803, 65-47812
Wing Sealing Index and Requirements
Figure 2 (Sheet 4)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
REFERENCE SPECIFICATIONS SEALING, GENERAL BAC5000 FLUID TIGHT FASTENER INSTALLATION BAC5047 MARKINGS IN INTEGRAL FUEL TANK AREAS BAC5307 INTEGRAL FUEL TANK STRUCTURE SEALING BAC5504 SEALING, GENERAL (FS AT BBL 70.85) BAC5510 SECONDARY FUEL BARRIER SEALANT BAC5527 APPLICATION OF BUNA N TYPE COATING TO INTEGRAL FUEL TANK BAC5741 CORROSION PROTECTION IN INTEGRAL FUEL TANKS BAC5793
SEC APL DRAWING NOMENCLATURE
71 65-59637 SEAL APPLICATION - FIREWALL, NACELLE TO WING FAIRING
10 & 11 65-47814 SEAL APPLICATION - INBD FAIRING
12 & 14 65-47812 SEAL APPLICATION - LEADING EDGE & TRAILING EDGE
11 65-47811 SEAL APPLICATION - PRESSURE FLOOR
11 65-47810 SEAL APPLICATION - CENTER SECTION
12 65-47809 SEAL APPLICATION - DRY BAY WBL 157 - WBL 227
12 65-47808 SEAL APPLICATION - TANK END RIB W STA 583
12 65-47807 SEAL APPLICATION - TANK END RIB W STA 531
12 65-47806 SEAL APPLICATION - TANK END RIB WBL 70.85
12 65-47805 SEAL APPLICATION - LOWER PANEL
12 65-47804 SEAL APPLICATION - UPPER PANEL
12 65-47803 SEAL APPLICATION - REAR SPAR
12 65-47802 SEAL APPLICATION - FRONT SPAR
11 65-45411 STRUCTURE ASSY - WING CENTER SECTION
10 65-79938 SEAL APPLICATION - INBD LE WING
Wing Sealing Index and Requirements
Figure 2 (Sheet 5)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
B. Definitions for Figure 2, Wing Sealing Index and Requirements.
(1)
Absolute Sealing
(a) All seams, holes, slots, joggles and instructure fastened to the seal plane shall be sealed (except instructure attached with self-sealing fasteners). All fasteners required sealing except self-sealing fasteners which must be oriented correctly.
(2)
Extensive Sealing
(a) All seams, holes, slots, and joggles in the seal plane must be sealed. Fasteners in class II holes or larger in the seal plane must be sealed.
(3)
Intermediate Sealing
(a) Same as extensive sealing except fasteners do not require sealing.
(4)
limited Sealing
(a) Same as extensive sealing except seams and fasteners do not require sealing.
(5)
Emergency Sealing
(a) A seal which backs up a primary seal so as to become functional when primary seal failure occurs and safely controls leakage. Bladder cells are considered primary seals.
(6)
Isolation Sealing
(a) A seal which limits traveling of fuel to facilitate leak detection.
(7)
Secondary Barrier Coating
(a) A fuel tank exterior coating for vapor and fuel protection on surfaces exposed to pressurized compartments of the airplane.
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