EVAC Panel

Flight Simulation Hardware – Evacuation Command Panel

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Overview

This panel replicates the EVAC (Evacuation) section found in the overhead panel of Airbus A3XX aircraft. It provides simulated support for:

• Activating an evacuation alarm through a dual Korry-style switch.

• Silencing the horn with a selector.

• Choosing between crew activation modes: Captain or Captain & Purser.

⚠️ Flight Simulation Only – Not for use in real aviation applications.

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Panel Layout

This panel uses a horizontal layout featuring one Korry switch and two rotary selector positions:

Acrylic Panels

Switch	Function	Legend	Type
COMMAND	when selected, the EVAC flashes and the ON Illuminates	EVAC Red / ON White	Momentary Korry
HORN SHUT OFF	disables cockpit horn	-	Push To Make Switch
CAPT & PURS / CAPT	Allows pilt to decide if alter can be activated from Captain only, or Cabin too	2 Position Switch

The front panel acrylic features a centered EVAC title and clearly engraved labels above each interaction point.

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PCB Details

Connectors & Interfaces

J3 – 40-Pin Header (Top Edge)

• Provides dedicated pins for LEDs and switch outputs:

Pin	Signal
1	COMMAND-TOP_LED
2	COMMAND-BOTTOM_LED
3	COMMAND-KORRY_SW
4	HORN_SHUT_OFF_SW
5	CAPT_PURS_SW
6	CAPT_SW

J1 – 2-Pin Terminal Block (Top Right)

• Supplies power for the LED backlighting.

• Marked: +12V Variable Backlight and GND

Internal Headers:

• J2 – For HORN SHUT OFF rotary selector

• J4 – For CAPT & PURS rotary selector

Each selector has its own silkscreen footprint and clearly labeled pads.

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LEDs and Indicators

• 24 yellow surface-mounted LEDs (D1–D24) placed around:

  • The EVAC switch

  • HORN SHUT OFF selector

  • CAPT & PURS selector

• Ensures consistent illumination across the panel.

• Resistors R1–R8 regulate current per LED group.

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Mounting and Assembly

• 2 corner mounting holes on each side of the PCB and acrylic front plate.

• Routed cutouts for:

  • Korry switch (COMMAND)

  • Rotary selectors (HORN SHUT OFF, CAPT & PURS)

• Clear silkscreen outlines and component labels aid in alignment.

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Fabrication and Panel Fit

Acrylic Front Panel:

• CNC-milled with legends for:

  • EVAC, COMMAND, HORN SHUT OFF, CAPT & PURS, CAPT

  • Switch labels: EVAC (top), ON (bottom)

• Color-coded DXF-style layout:

  • Red = Front Panel

  • Blue = Back Panel

  • Green = Engraving

  • Orange = Korry Labels

Panel alignment is ensured with component placement and LED zones matching the front panel cutouts.

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PCB Design Reference

• Red = top copper layer

• Blue = bottom copper layer

• Yellow = silkscreen and outlines

• White = connector legends

Routing is clean and optimized for LED distribution and switch wiring consistency.

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Attribution

• Version: EVAC Panel v1.0

• Project: OpenA3XX

• License: CC BY-SA 4.0

• Note: Design for simulation use only.