There is one support at each end of the outboard flap. Access to the supports is through access panels under the wing.
Physical Description
Each outboard flap auxiliary support has a deflection control track and a carriage. The carriage attaches to the flap structure. Rollers in the carriage move along the track.
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TRAILING EDGE FLAPS -OUTBOARD FLAP AUXILIARY SUPPORTS
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TRAILING EDGE FLAPS -INBOARD FLAP AND AFT FLAP
Purpose
The inboard main flap and aft flap increase the lift of the wing during takeoff and climbout. They also increase the lift and drag during approach and landing. During cruise, they stay in the retracted position.
Physical Description
The inboard main flap and aft flap are made of lightweight composite materials. The skin is reinforced graphite/epoxy bonded to a core of Nomex honeycomb. The dimensions of the inboard main flap are approximately 216 inches by 100 inches
(5.5 m by 2.5 m). The dimensions of the aft flap are approximately 192 inches by 46 inches (4.9 m by 1.2 m). The inboard main flap weighs approximately 577 lb (262 kg) and the aft flap weighs approximately 208 lb (95 kg).
Location
The inboard main flap is between the engine and the fuselage, along the trailing edge of the wing. The aft flap attaches to the aft flap tracks along the trailing edge of the main flap.
Functional Description
The maximum deflection of the inboard main flap is at flap position 30. The aft flap rotates with the inboard main flap from flap position UP to 20. At flap positions 25 and 30, the aft flap extends and rotates more than the inboard main flap.
Training Information Point
There are three hoist points on both the inboard main flap and the aft flap. A spreader bar is not necessary to lift the flaps.
CAUTION: MAKE SURE THE ADP ACCESS DOOR IS FULLY OPEN OR FULLY CLOSED WHEN YOU MOVE THE TRAILING EDGE FLAPS. THE FLAPS CAN HIT THE DOOR IF IT IS NOT FULLY OPEN OR CLOSED. THIS CAN CAUSE DAMAGE TO EQUIPMENT.
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TRAILING EDGE FLAPS -INBOARD FLAP SUPPORT FAIRINGS
Purpose
The inboard flap support fairings cover the flap support mechanisms which are outside of the wing to body fairing and below the wing. The fairings supply an aerodynamic enclosure.
Physical Description
All the fairings are composite materials. They attach to their support structure by bearing points and by linkages.
The fairings have access panels to permit access to the components inside the fairings.
Location
The inboard flap has two flap support fairings on each wing. One is inboard near the wing to body fairing and one is outboard. There is also a center track fairing for the inboard aft flap.
Functional Description
The inboard support fairing has a forward fairing attached to the inboard main flap and an aft fairing attached to the inboard aft flap. The forward and aft fairings move with the main and aft flaps.
The center track fairing has a forward fairing attached to the inboard main flap and an aft fairing attached to the aft flap. The forward and aft fairings move with the main and aft flaps.
The outboard support fairing has a forward fairing attached to the wing lower surface and an aft fairing attached to the outboard flap support mechanism. The outboard support fairing moves down during the inboard flap extension to supply the clearance for the main and aft flap movement.
Training Information Point
There is a spring loaded door on the access panel on the outboard side of the outboard forward fairing for the inboard flap. This door is not for access to any components. It opens automatically to show that the primary fuse pin has sheared. The primary fuse pin connects the outboard support structure of the inboard flap to the wing. When the primary fuse pin shears, the load transfers to the secondary fuse pin. This causes the flap structure to move and to operate a mechanism that releases the door latch. Springs open the door and keep it open.
If you see this door open on the outboard forward fairing for the inboard flap, it is necessary to make an inspection of the fuse pins and make applicable corrections.
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TRAILING EDGE FLAPS -INBOARD FLAP SUPPORT FAIRINGS
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