Electrical Wiring Interconnect System

T he empennage, also known as the tail or tail assembly, is a structure at the rear of an aircraft that houses the horizontal and vertical stabilizers, which provide yaw and pitch stability to the aircraft during flight. EWIS cabling interconnecting flight controls, transitions via the aft pressure bulkhead, which protects the cabin interior volume. An Auxiliary Power Unit (APU) and firewall is also located within the tail assembly and is serviced with a broad range of both power as well as signal cabling. Empennage and Vertical Stabilizer Tip An unpressurized harsh environment zone ZONE 7

Swing-Arm® and Swing-Arm Flex

„„ Lightweight composite or stainless steel strain relief and EMI shield termination backshell „„ Ideally suited for use throughout the aircraft including Zone 7 „„ Versatile 3-in-1 cable routing solution „„ Shield termination options for overall as well as individual wire shielding „„ Innovative drop-in follower designs

Zone 7 Application Guidelines

Environmental Stress Factors

Applicable RTCA/DO-160 Requirements


DO-160 Category S and H (Table 8-1) DO-160 Category A, Test Procedure 1


-65° to 200°C; DO-160 Category D3 APU zone (Table 4-1); Category D2 Sea level to 50kft; DO-160 Category D2 (Table 4-1)

Ground Survival Temperature

Pressure Differential Operating Temperature

-55° to 200°C; DO-160 category D3 (Table 4-1)


Exposure to humidity and condensation; DO-160 Category B

Qwik Connect • April 2019


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