Horizontal Stabilizer Center Section - Removal/Installation
Figure 402
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A 737-300/400/500MAINTENANCE MANUAL
(4) S 424-008-B00Connect the lower outboard end. (a) Install the thrust brace link (27) to fitting (9). (b) Install bolt (23), washer (13) and nut (12). (c) Install cotter pin (11).
(5) S 094-010-B00Remove the wood beams.
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737-300/400/500MAINTENANCE MANUAL
ELEVATOR - DESCRIPTION AND OPERATION
____________________________________
1. General_______
A. The elevators are hinged on the aft edge of the stabilizer structure and include control tabs. Refer to Chapter 55 of the Structural Repair Manual for skin identification.
2. Elevators_________
A. The basic structure of the elevator is dual spar at the inboard end and mono spar at the outboard end, with all areas reinforced with ribs (Fig. 1.) The elevators are attached to hinge ribs extending aft from the rear spar of the stabilizer by elevator hinges on the front spar of the elevator. The elevator nose and balance panels project forward of the hinge line and are housed in the spaces between the hinge ribs on the stabilizer rear spar. An increase in chord at the outboard tip of the elevator provides the elevator tip with additional space forward of the hinge line for mounting static balance weights.
3. Elevator Control Tabs_____________________
A. The elevator control tabs are single spar structures located in cutouts in the trailing edges of the elevators (Fig. 1.) A honeycomb panel trailing edge is attached to the aft side of the spar and extends aft in a tapering shape.
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ELEV STA
ELEV STA
211.95
123.54
FWD
INBD
Elevator and Tab Structure
Figure 1
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737-300/400/500MAINTENANCE MANUAL
VERTICAL STABILIZER (FIN) - DESCRIPTION AND OPERATION
_____________________________________________________
1. General_______
A. The vertical fin is attached to body section 48. The fin may be removed from the airplane. The leading edge is detachable. The dorsal fin is not structurally connected to the main vertical fin and may be removed as a separate unit.
2. Vertical Fin Structure______________________
A. The front and rear spars, the ribs and the skin of the vertical fin or a beam which is the main structural member of the fin (Fig. 1.) Attachment of the fin to the fuselage is by front and rear spar fittings at body stations 1016 and 1088, with no structural tie between the fin skin and the fuselage. Refer to Chapter 55 of the Structural Repair Manual for skin identification.
B. The structure aft of the rear spar consists of ribs which incorporate hinge bearings for the rudder. The left and right surfaces of the area between the rear spar and the rudder hinge bearings are covered by skin panels attached to the ribs to form a trailing edge fairing part of which is removable for maintenance purposes.
C. A removable leading edge structure is attached to the forward side of the fin front spar. A fairing is attached at the top of the fin. Removable panels are provided to allow access by maintenance personnel to the interior of the fin structure and the systems contained within it.
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