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 F.  At body station 540, a bulkhead extends across the fuselage from floor level and down. This bulkhead serves as the aft wall of the forward cargo compartment and the front spar of the center wing box.
 G.  At body station 664, a bulkhead extends across the fuselage from floor level and down. This bulkhead serves as the aft spar of the center wing box and the forward wall of the main landing gear wheel well.
 H.  At body station 727, a bulkhead extends across the fuselage from floor level and down. This bulkhead serves as the aft wall of the main landing gear wheel well and the forward wall of the aft cargo compartment.
 I.  The pressure bulkhead at body station 1016 is a curved web extending aft like a dome in the vertical plane. The web is reinforced with radii stringers all originating at the center of the web. The web forms the aft end of the pressurized cabin. The vertical fin front spar attach fittings are at the top of the fuselage at body station 1016 (Fig. 2).
 J.  The bulkhead at body station 1088 incorporates the vertical fin rear spar attach fittings. A rectangular cutout in the web allows the forward part of the horizontal stabilizer center section truss to protrude through it. The horizontal stabilizer jackscrew mechanism is attached to the forward side of the bulkhead web.
 K.  The bulkhead at body station 1156 incorporates the horizontal stabilizer center section truss hinge joints. Elevator control mechanisms are attached to the aft side of the bulkhead. The lower part of the bulkhead is cut away to allow for the APU exhaust pipe.
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 53-11-00
 ALL  ú ú B01 Page 1 ú Oct 25/84
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
ASEE STRINGER FRAME DOUBLER  A  STRINGER 
CONTINUOUS BEAM SEAT TRACK  CLIP 
FLOOR BEAM TRANSVERSE 
STRINGER  A  FRAME 
FWD  A 

BSEE RIVET SHEAR HEAD 
A-A  B 
Typical Fuselage Structure Figure 1 

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 53-11-00
 ALL  ú ú B01 Page 2 ú Oct 20/83
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FWD LUGS FOR ATTACHMENT OF VERTICAL FIN
S-10
S-11
S-12
S-13

Aft Pressure Bulkhead
Figure 2

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 53-11-00
 ALL  ú ú B01 Page 3 ú Oct 20/83
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STRINGERS AND OTHER LONGITUDINAL MEMBERS -
__________________________________________ DESCRIPTION AND OPERATION
_________________________
 1.  General_______
 A.  The fuselage stringers, which start at body station 259.5, are hat-section members along the entire fuselage. Refer to Chapter 53 of the Structural Repair Manual for stringer identification.
 B.  Typical attachments of stringers to skin and frames are shown in 53-11-00. Some stingers just above and below the floor beams are attached to the frames by an additional fitting. The continuity of the stringers is maintained across the production jonts in the fuselage structure by terminating the stringers on each section at a fitting which is attached to the production joint frame.
 C.  A horizontal beam extends along each side of the fuselage level with the top of the floor. These beams are known as the crease beams because they are attached to the fuselage skin at the "crease" formed by the intersection between the upper and lower lobes of the fuselage cross-section. Along their outboard edges the crease beams are attached to the skin by a continuous chord, or stringer. The inboard chord of each beam consists of a continuous angle attached to the inboard edges of the frames and the upper edges of the floor beams. Between its continuous outboard and inboard chords the crease beam consists of a series of webs which individually extend from frame to frame.
　
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