Body Sealing Index and Requirements 500
51-31-0 Figure 1 (Sheet 3) Apr 01/97
Page 4
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Body Sealing Index and Requirements
Feb 15/68 Figure 1 (Sheet 4) 51-31-0
Page 5
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Body Sealing Index and Requirements 530
51-31-0 Figure 1 (Sheet 5) Nov 15/69
Page 6
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
539 Wing Sealing Index and Requirements
Aug 15/72 Figure 2 (Sheet 1) 51-31-0
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
REQUIREMENTS
GENERAL
1.
DO NOT PLUG DRAIN OR LIMBER HOLES.
2.
ALL DOME TYPE NUTPLATES OR BOLTS WHICH PENETRATE THE INTERIOR OF THE TANK SEAL PLANE SHALL BE SEALED.
3.
EALANT MAY BE APPLIED ON CORROSION PROTECTIVE COATING (BAC5793), WITH THE EXCEPTION OF THE DRY BAY, ONLY IN AREAS WHERE THE SEALANT BARRIER IS USED TO PREVENT AN INTANK LEAK, OR AS AN ISOLATION SEAL.
4.
FUNCTIONAL LEAK TEST WING PER D6-17554.
5.
IN AREAS OF THE VENTS & RIBS BETWEEN TANKS WHERE THE MANUFACTURED HEADS OF RIVETS MUST SEAL, THE SEALANT MAY BE OMITTED AS LONG AS THE HEADS HAVE BEEN MECHANICALLY SEALED PER D6-8777 OR BACR158D (SLUG) RIVET. THE RIVETS MUST FULFILL ALL FUNCTIONAL TEST REQUIREMENTS.
6.
ALL MANUFACTURED HEADS OF RIVETS WHICH ATTACH VENT STIFFENERS (S-11 & S-12) TO UPPER SKIN OF THE WING CENTER SECTION SHALL BE SEALED PER BAC5504.
MAIN TANK #1, #2 OPPOSITE.
ABSOLUTE FUEL SEAL PER BAC5504 REQUIRED ON ALL INTERNAL BOUNDARIES OF TANK. ISOLATION FUEL SEAL PER BAC5504 REQUIRED AT INTERVALS ALONG ALL SEALED SEAMS.
DRY BAY (WBL 157 - WBL 227)
ABSOLUTE FUEL SEAL PER BAC5504 REQUIRED ON ALL INTERNAL & EXTERNAL BOUNDARIES. (DOES NOT APPLY TO REAR SPAR. SEE 65-47809). SEALANT MAY BE APPLIED OVER BMS 10-20 TYPE 1 ONLY ON EXTERNAL BOUNDARIES OF INTEGRRAL FUEL TANK (INSIDE OF DRY BAY) EXCEPT ON FIBERGLASS TANK WALLS.
SEALANT MAY BE APPLIED OVER BMS 10-20 TYPE 2 (FINCH PRIMER) ON INTERNAL AND EXTERNAL BOUNDARIES.
Wing Sealing Index and Requirements 500
51-31-0 Figure 2 (Sheet 2) Aug 15/72
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
STRUCTURAL VENTS (INTEGRAL TANK)
ABSOLUTE FUEL SEAL PER BAC5504 ON INTERNAL AND EXTERNAL BOUNDARIES OF VENTS. SEE CORROSION PROTECTION REQUIREMENTS FOR INFORMATION ON SEALING OVER CORROSION PROTECTIVE COATING AND USE OF MECHANICALLY SEALED MANUFACTURED HEADS OF RIVETS.
VENT SURGE TANK
ABSOLUTE FUEL SEAL PER BAC5504 REQUIRED ON ALL INTERNAL BOUNDARIES OF TANK.
NOTE: IN THE AREAS OF AN ABSOLUTE FUEL SEAL IT IS NOT NECESSARY TO SEAL WHERE AN ABSOLUTE FUEL SEAL IS PROVIDED ON THE OPPOSITE SIDE.
BAFFLE RIB (WBL 157)
INTERMEDIATE FUEL SEAL PER BAC5504 REQUIRED ON RIB CHORD FLANGES COMMON TO THE SKINS.
WING CENTER SECTION
1.
ABSOLUTE FUEL SEAL REQUIRED ON ALL INTERNAL BOUNDARIES OF TANK PER BAC5504.
2.
SEALANT REQUIRED AT ALL EXTERIOR MEMBERS ATTACHMENT BRACKETS, PROTRUDING HEAD FASTENERS, ETC., WHICH ARE FASTENED TO THE UPPER PANEL AND FRONT SPAR. THIS SEALANT PROVIDES A SMOOTH SURFACE FOR THE SECONDARY BARRIER COATING.
3.
SECONDARY BARRIER COATING PER BAC5527 - VAPOR AND FUEL LEAK ISOLATION SEAL ON EXTERIOR SURFACE OF UPPER PANEL AND FRONT SPAR EXPOSED TO PRESSURIZED COMPARTMENTS OF THE AIRPLANE.
STRUCTURAL VENT (WING CENTER SECTION)
ABSOLUTE FUEL SEAL PER BAC5504 ON INTERNAL AND EXTERNAL BOUNDARIES OF VENT. A SECOND FUEL BARRIER SHALL BE LOCATED BETWEEN THE VENT AREA AND THE CABIN PRESSURE AREA BY DOUBLE SEALING ALL FASTENERS AND SEAMS WHICH ARE COMMON TO BOTH AREAS. SEALING APPLICATION FOR SECONDARY FUEL BARRIER SHALL BE PER BAC5000.
539 Wing Sealing Index and Requirements
Aug 15/72 Figure 2 (Sheet 3) 51-31-0
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
PRESSURE FLOOR
EXTENSIVE PRESSURE SEAL PER BAC5000 REQUIRED ON ENTIRE UPPER SURFACE OF
PRESSURE FLOOR FROM B STA 664 TO B STA 727 AND FORWARD SURFACE OF VERTICAL
WEB FROM WL 193.86 TO WL 202.6.
LEADING EDGE RIB AND BOOST PUMP CAVITY
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