DECK RAMPS There are 12 portable deck ramps. They should be numbered 1 through 12 from port to starboard. The numbering should be large enough to facilitate easy identification and placement in corresponding positions on the flight deck. The purpose of the deck ramps is to ensure that the aircraft landing gear does not become entangled with or damage the lower load straps during approach and engagement of the barricade. Deck ramps are normally installed by V-1 division personnel during barricade rig evolutions. MULTIPLE-RELEASE ASSEMBLY The multiple-release assemblies provide the connection between the upper and lower load straps of the barricade and the tensioning pendants of the barricade stanchions. They serve to release the webbing assembly during an aircraft engagement (figs. 3-32 and 3-34.) The multiple-release assembly consists of a number of release straps attached to loops at the ends of the load straps. They are then attached to the tensioning pendants by preswagged snap hooks or quick-release pin and chain assemblies. During an emergency arrestment, the force of the aircraft engaging the barricade breaks the multiple-release straps, releasing the barricade from the tensioning pendants (fig. 3-33), allowing it to fall over the aircraft. The energy of the engagement is then transferred from the barricade through the purchase cable to the arresting engine. BARRICADE STANCHIONS Barricade stanchions house the winches that tension and support the barricades. They further provide the structure on which the barricade is raised or lowered. Except for differences of location and position of the actuating apparatus-deckedge, above or below deck-port and starboard stanchions are identical. The port stanchions with their actuating apparatus are described in this chapter. Barricade stanchions (fig. 3-35) are welded steel, tray-shaped assemblies that consist essentially of a base (6) on which is hinged the frame (12). Each barricade frame contains the winches (10), sheaves, and pendants (1) used to tension the upper barricade webbing load strap. Each barricade stanchion is provided with a slot, at the top of the inboard side, through which passes the upper tensioning pendant. The frame moves as a hinge around the two stanchion shafts (8), the barrel of the hinge being the base and the knuckles of the hinge being the hubs of the stanchion frame. The two shafts act as the pins of the hinge. The actuating arm (5) is keyed and pinned on the outer shaft and is pinned to a holder on the stanchion. Rubber bumper pads (3) are bolted in the deck recess to cushion the shock of lowering the stanchions. BARRICADE STANCHION WINCHES One winch is mounted in each barricade stanchion and is attached to the tensioning pendant of the upper loading strap of the barricade. The barricade stanchion winch (fig. 3-36) is a worm-driven winch whose component parts include 1. Worm wheel 11. Winch base 2. Drum 12. Drum 3. Base 13. Ratchet 4. Shaft 14. Locking pawl 5. Bevel gear 15. Pawl handle 6. Ratchet lock 16. Winch cover 7. Ratchet 17. Plunger 8. Worm 18. Bolt 9. Drum handle 19. Lockwasher 10. Winch cover 20. Retractor Figure 3-36.—Winches. 3-39