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F43460
A 737-300/400/500MAINTENANCE MANUAL
SIDE-OF-BODY RIB
SEE FIG. 638 (INTERNAL VIEW)
SEE FIG. 639 (EXTERNAL VIEW)
Figure Directory - Lower Wing Tank at the Side-of-Body
Figure 632
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F42162
A
737-300/400/500MAINTENANCE MANUAL
(b)
At a fastener self-sealing collar.
(c)
At a fillet seal between the lower wing skin and the skin splice plate.
(d)
At the fillet seal between stiffener S-9 end fitting and wing structure.
(e)
At the fillet seal between stiffener S-9 and wing skin. 1) The leak can occur anywhere along the length of the
________ stiffener S-9.
R. External Side-of-Body Joint at Stiffener S-9
S 286-205
(1)
Leaks can occur from the No. 1 or No. 2 tank at the inboard end at the side-of-body joint at lower stiffener S-9.
S 286-206
(2)
Leaks from this area can occur when the No. 1 or No. 2 tank has a residual quantity or more of fuel and when the airplane is parked and level.
S 286-207
(3)
The external leak point can be at a location shown in Fig. 635.
S 286-208
(4)
Find the external leak point.
(a) Remove the aerodynamic gap seal in areas of suspected leak paths to find the external leak point.
S 286-209
(5) The external leak point can be at one of these locations:
(a)
At a fastener.
(b)
At the faying surface between the lower wing skin and the skin splice plate.
(c)
At the faying surface between stiffener S-9 splice plate and wing skin.
(d)
At the faying surface between stiffener S-9 and wing skin. 1) The leak can occur anywhere along the length of stiffener
________ S-9.
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A 737-300/400/500MAINTENANCE MANUAL
LOWER SKIN
STIFFENER S-9
INBD SPLICE PLATE
NO. 1 TANK SIDE-OF-BODY JOINT AT STIFFENER S-9
No. 1 Tank - Side-of-Body Joint at Stiffener S-9
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F42179
A 737-300/400/500MAINTENANCE MANUAL
RIB RIB
STIFFENER STIFFENER
RIB
STIFFENER
RIB WEB
LOWER
STIFFENER S-10 LOWER WING SKIN LOWER STIFFENER S-9 LOWER STIFFENER S-8
FWD
OUTBD
No. 1 Tank - Side-of-Body Joint at Stiffener S-9 (Shown Without Sealant)
Figure 633 (Sheet 2)
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