BOOST PUMP CAVITY. SEE 65-47812 FOR SEALING INFORMATION.
THERMAL ANTI-ICING
LIMITED SEAL PER BAC5000 REQUIRED FOR LEADING EDGE SLATS.
LEADING EDGE RIB ISOLATION SEAL DAMS.
ISOLATION FUEL SEAL PER BAC5000 TO PROVIDE DAMS.
LANDING LIGHT
ABSOLUTE WEATHER SEAL PER BAC5000 ALL LIGHT COMPARTMENT BOUNDARIES
AGAINST OUTSIDE ELEMENTS.
FIREWALL (NACELLE TO WING FAIRING)
INTERMEDIATE AND LIMITED SEAL PER BAC5000.
TRAILING EDGE RIB
LIMITED VAPOR SEAL PER BAC5000
WINGTIP (EMERGENCY SEAL)
LIMITED VAPOR SEAL PER BAC5000
CLOSURE RIB AND REAR SPAR, OUTBOARD OF VENT SURGE TANK
INTERMEDIATE SEAL PER BAC5000 (SEE 65-47812).
Wing Sealing Index and Requirements 500
51-31-0 Figure 2 (Sheet 4) Aug 15/72
Page 10
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
CORROSION PROTECTION REQUIREMENTS
APPLY CORROSION PROTECTIVE COATING F12.23 (BMS 10-20 PER BAC5793) TO INTEGRAL FUEL TANK AREAS AS FOLLOWS:
1.
THE ENTIRE INTERIOR BOTTOM SURFACE AND FASTENERS, INCLUDING DETAILED PARTS WHICH HAVE PREVIOUSLY BEEN COATED WITH F12.23.
2.
ALL INSTRUCTURE UP TO 2.5 INCHES ABOVE THE INTERIOR BOTTOM SURFACE WITH OPTIONAL COATING ON BAFFLES, ATTACH CLIPS, AND THE LOWER SURFACE OF THE STIFFENER UPPER FLANGES AS SHOWN:
THIS TOP COATING SHALL INCLUDE PARTS WHICH WERE PREVIOUSLY
COATING COATED WITH F12.23, BUT EXCLUDE
OPTIONAL O-RING SEAL SURFACES 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, 65-47803, 65-47812
H30443
500 Wing Sealing Index and Requirements
Aug 15/72 Figure 2 (Sheet 5) 51-31-0
Page 11
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
F85732
Wing Sealing Index and Requirements 527
51-31-0 Figure 2 (Sheet 6) Aug 15/72
Page 12
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
2. Definitions of Levels of Sealing -
A. Definitions for Figure 1, Body Sealing Index and Requirements.
(1)
Absolute Seal (no leakage allowed)
(a) All holes, slots, joggles and seams in the seal plane shall be sealed. All fasteners require sealing.
(2)
Extensive Seal
(a) All holes, slots, joggles and seams in the seal plane shall be sealed. Fasteners do not require sealing except for bolts and screws in class II or larger holes. Dome 0-ring type nutplates do not require sealing.
(3)
Intermediate Seal
(a) All holes, slots, joggles and seams in the seal plane require sealing. Fasteners do not require sealing.
(4)
Limited Seal
(a) All holes, slots and joggles shall be sealed. Seems and fasteners do not require sealing.
(5)
Special Seal
(a) Seal per DWG.
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 require sealing except self-sealing fasteners which must be oriented correctly.
(2)
Extensive Sealing
(a) A-11 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
500
Aug 15/72 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 51-31-0 Page 13
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