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F/A-18 AIRCRAFT WEAPONS SYSTEMS
Figure 7-13.-Digital display indicators

Aviation Electronics Technician 1 (Organizational)
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Figure 7-9.-Landing gear control handle. LANDING GEAR CONTROL HANDLE.— The LDG GEAR control (fig. 7-9) in the DN position disables normal weapon release, launch, and fire signals. In the UP position, 28-volt dc power is applied from the main landing gear weight-off-wheels relay to the master arm circuit breaker. A R M A M E N T  S A F E T Y  O V E R R I DE SWITCH.— The armament safety override switch (fig. 7-10) is on the maintenance panel that is located in the nosewheel well. In the override position, it overrides the landing gear handle DN position to enable weapons systems for ground operational maintenance. M A S T E R  A R M  C O N T R O L  P A N E L ASSEMBLY.— The master arm control panel assembly (fig. 7-11) is located in the cockpit. It contains the A/A, A/G, and the MASTER switches. The A/A and A/G switches are push-button switches that provide a ground to the stores management processor (SMP). They select the air-to-air or air-to-ground computer modes, respectively. The MASTER switch is used in conjunction with the LDG Figure 7-10.-Armament safety override switch. Figure 7-11.-Master arm control panel assembly. GEAR handle or the armament safety override switch. In the SAFE position, weapons cannot be released or fired. Emergency jettison can be initiated while this switch is in the SAFE position. The ARM position provides an input to the SMP and power for weapns release, fire, or jettison. The switch position (SAFE/ARM) will be displayed on the DDIs in the wing-form display. AIRCRAFT CONTROLLER GRIP ASSEMBLY.— The aircraft controller grip assembly (fig. 7-12) contains the A/G weapons release switch (bomb release switch). The switch is spring-loaded to the OFF position. When the switch is pressed, it completes a circuit from the SMP and provides an input back to the SMP. The aircraft controller grip assembly also contains an A/A switch and the trigger switch. DIGITAL DISPLAY INDICATORS DDIs).— The digital display indicators (fig. 7-13) are located on the main instrument panel vertical consoles. The DDIs monitor the SMP and display that information. The DDIs always have a wing-form display, and when in the air-to-ground mode, a program list. The wing- form display, program list, and switches/controls on the DDIs are discussed in the following paragraphs. 7-6







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