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ALL ú ú B01 Page 1 ú Oct 20/83
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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A
737-300/400/500MAINTENANCE MANUAL
FLIGHT SURFACES - DESCRIPTION AND OPERATION
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General
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A. The wing flight surfaces consist of ailerons, trailing edge flaps,
leading edge flaps, leading edge slats, and spoilers (Fig. 1).Ailerons
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A. The ailerons are the major wing flight control surfaces. Each wing has an aileron. Each aileron is hinged from ribs attached to the rear spar, and is provided with a tab along its trailing edge.
Trailing Edge Flaps
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A. The trailing edge flaps are auxiliary surfaces. Each wing has an inboard and an outboard trailing edge flap assembly. Each of these assemblies are triple slotted, consisting of three component sections: the foreflap, the midflap and the aftflap. Each complete trailing edge flap assembly is supported on the wing by two flap tracks, and is moved along these tracks to assume its various extended positions.
Leading Edge Flaps
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A. The leading edge flaps are auxiliary surfaces. The inboard section of the leading edge, inboard of the engine of each wing is provided with two leading edge flaps. These flaps hinge downwards from the forward side of the wing front spar, and are equipped with nose sections which hinge inward when the flaps retract flush with the wing lower surface.
Leading Edge Slats
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A. The outboard section of the leanding edge of each wing, outboard of the engine to the wing tip, is provided with three leading edge slats. These slats are auxiliary flight surfaces. The slats are supported on track roller supported ribs attached to the wing front spar.
Spoilers
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A. The remaining auxiliary flight surfaces are five spoilers along the upper surface of the trailing edge of each wing. Each spoiler hinges upwards from its leading edge. The inboard spoiler is hinged from the aft side of the wing rear spar and the landing gear support beam, and the four outboard spoilers are hinged from the aft side of the wing rear spar. The ground spoilers are located furthest outboard on the wings and inboard of the engines. The flight spoilers are located immediately outboard of the engines. All spoilers lie flush with the wing when faired and can be raised to various angles when in use.
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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
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Wing Flight Control Surfaces
Figure 1
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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
AILERONS - DESCRIPTION AND OPERATION
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1. General_______
A. The ailerons are hinged from the wing rear spars and include balance tabs.
2. Ailerons________
A. Each aileron is a frame structure consisting of leading and trailing edge spars. The ailerons are of graphite/epoxy construction with upper and lower skins of graphite/epoxy and nomex honeycomb core. An aileron balance tab is attached to the rear spar of the aileron by four hinge bearings. Outboard of the balance tab, the aileron trailing edge is of honeycomb construction. The aileron is provided with four hinge bearings attached to the front spar. Access panels are provided for each hinge bearing. The aluminum nose of the aileron extends forward between the hinge bearings and is connected to one balance panel.
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