(g)
Do a bonding test between the closing panel (2) and the dry bay structure (1) (Ref. TASK 20-28-00-912-002). Make sure that the electrical resistance is less than 10 milliohms.
(h)
Apply a continuous bead of SEALANTS (Material No. 09-002) and make a fillet seal between the closing panel (2) and structure (1):
-
at the joint on the fuel-tank side of the closing panel (2)
-
at the joint on the dry bay side of the closing panel (2).
(i)
Use a brush to apply an overcoat layer of SEALANTS (Material No. 09-001) or SEALANTS (Material No. 09-002) on the fuel-tank side to:
-
the bolts (4)
-
the joint between the closing panel (2) and the structure (1).
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Subtask 57-27-11-410-056
C. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Install the access panels 540BB(640BB) (Ref. TASK 57-27-11-400-001). Subtask 57-27-11-860-067
D. Aircraft Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Refuel the wing tank to the high level cut-off condition (Ref. TASK 12-11-28-650-003).
Subtask 57-27-11-790-054
E. Test
(1)
Do a status report (BITE) of the fuel quantity indicating system (Ref. TASK 28-42-00-740-001).
(2)
Do a functional (BITE) test of the fuel quantity sensors (Ref. TASK 28-46-00-740-001).
(3)
Examine the panels 540CZ(640CZ), 540DZ(640DZ) for leaks inside the dry bay.
5. Close-up
________ Subtask 57-27-11-860-068
A. Aircraft Configuration
(1) De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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Subtask 57-27-11-410-057
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panels 521AZ(621AZ), 521BZ(621BZ) and 521CZ(621CZ) (Ref. TASK 57-27-11-400-005).
Subtask 57-27-11-942-057
C. Removal of Equipment
(1)
Remove the safety barriers.
(2)
Remove the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER from the flap/slat control lever.
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s).
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
ACCESS PANEL - OUTER WING - REPAIRS
___________________________________
TASK 57-27-11-300-001
Repair of the Outer Wing - SPF Access Panels
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific transparent plastic bag
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 09-002 USA MIL-S-8802 TYPE I CLASS B FUEL TANK SEALANTPOLYSULFID(NO LONGER AVAILABLE (Ref. 20-31-00)
Material No. 11-026 GB DEF-STAN 68-148/1 SOLVENT GENERAL PURPOSE (Ref. 20-31-00) Material No. 19-003 USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank
57-27-11-400-001 Installation of the Access Panel (540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
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3. Job Set-up
__________
Subtask 57-27-11-941-073
A. Safety Precautions WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
(1) You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001) when you do work in a fuel tank.
4. Procedure
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