MISCELLANEOUS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Slat-track Cans and Dry Bay Drains ** ON A/C NOT FOR ALL
Slat-track Cans - Drains ** ON A/C NOT FOR ALL
There are drainholes in the lower surface of the wing, to drain the leading edge and other structures.
Attached to the wingbox are:
** ON A/C NOT FOR ALL
Slat-track Cans and Dry Bay Drains ** ON A/C NOT FOR ALL
Slat-track Cans - Drains ** ON A/C NOT FOR ALL Attached to the wingbox are:
- the jacking point
- the drip fence
- the air dam.
2. Component Description
A. Drainholes
There are two sets of drainholes in the lower wing surface to drain liquid that can collect inside the leading edge. The drainholes are:
The leading-edge slat tracks go through holes in the front spar. Track cans are attached to the front spar and isolate the tracks from the wing fuel tanks. Liquid from the slat tracks collects in the cans and then flows down drain-pipes to drain-holes in the bottom skin. At track 4 in both wings there is a dry bay and no cans. Liquid from these tracks falls to the bottom skin and then flows out from the drain-holes.
Single drainholes drain liquid from other areas of the wing structure. They are:
There are two sets of drainholes in the lower wing surface to drain liquid that can collect inside the leading edge. The drainholes are:
The leading-edge slat tracks go through holes in the front spar. Track cans are attached to the front spar and isolate the tracks from the wing fuel tanks. Liquid from the slat tracks collects in the cans and then flows down drain-pipes to drain-holes in the bottom skin.
Single drainholes drain liquid from other areas of the wing structure. They are:
There are two sets of drainholes in the lower wing surface to drain liquid that can collect inside the leading edge. The drainholes are:
- in some of the leading edge access panels
- in the lower wing skin forward of the front spar.
The leading-edge slat tracks go through holes in the front spar. Track cans are attached to the front spar and isolate the tracks from the wing fuel tanks. Liquid from the slat tracks collects in the cans and then flows down drain-pipes to drain-holes in the bottom skin. At track 4 in both wings there is a dry bay and no cans. Liquid from these tracks falls to the bottom skin and then flows out from the drain-holes.
Single drainholes drain liquid from other areas of the wing structure. They are:
- in the wing tip structure at the leading edge
- between the two outer manholes
- in the access panels 574BB(674BB) and 574AB(674AB) on each side of the No. 2 flap track fairing.
There are two sets of drainholes in the lower wing surface to drain liquid that can collect inside the leading edge. The drainholes are:
- in some of the leading edge access panels
- in the lower wing skin forward of the front spar.
The leading-edge slat tracks go through holes in the front spar. Track cans are attached to the front spar and isolate the tracks from the wing fuel tanks. Liquid from the slat tracks collects in the cans and then flows down drain-pipes to drain-holes in the bottom skin.
Single drainholes drain liquid from other areas of the wing structure. They are:
- in the wing tip structure at the leading edge
- between the two outer manholes
- in the access panels 574BB(674BB) and 574AB(674AB) on each side of the No. 2 flap track fairing.
B. Jacking point
The jacking point fitting is at RIB9. It is attached to the aft face of the rear spar and to the upper surface of the bottom skin. The fitting is machined from aluminum alloy and transmits the jacking loads into the wing structure (Ref. 07-11-00).
The jacking point fitting is at RIB9. It is attached to the aft face of the rear spar and to the upper surface of the bottom skin. The fitting is machined from aluminum alloy and transmits the jacking loads into the wing structure (Ref. 07-11-00).
C. Drip Fence
The drip fence is installed on the bottom skin at RIB22, inboard of the NACA intake access panel 550AB(660AB) (Ref. AMM D/O 57-27-00-00).
The drip fence is an aluminum alloy angle. It prevents fuel which has come out of the NACA intake from flowing down the wing surface to the pylon area. The angled surface stops the flow of fuel and causes it to fall to the ground.
The drip fence is installed on the bottom skin at RIB22, inboard of the NACA intake access panel 550AB(660AB) (Ref. AMM D/O 57-27-00-00).
The drip fence is an aluminum alloy angle. It prevents fuel which has come out of the NACA intake from flowing down the wing surface to the pylon area. The angled surface stops the flow of fuel and causes it to fall to the ground.
D. Air Dam
The air dam is machined from two aluminum alloy castings and is located on the bottom skin in the engine pylon Z400. The air dam forms the aft boundary of the environment protection system (Ref. AMM D/O 36-14-00-00).
The air dam is machined from two aluminum alloy castings and is located on the bottom skin in the engine pylon Z400. The air dam forms the aft boundary of the environment protection system (Ref. AMM D/O 36-14-00-00).