David Clark 40493G-01 Dual-Ear Military Aviation Headset | C-17 Use

The David Clark 40493G-01 is a durable, dual-ear aviation headset designed for military aircrew operating in high-noise environments such as the C-17 and similar transport aircraft.

• Dual-ear, over-the-head style with comfort-gel ear seals for full noise isolation
• M-7A amplified electret noise-canceling microphone for clear communication
• 5 ft coiled cord with U-174/U plug and single volume control
• 23 dB NRR for effective passive noise reduction in high-decibel cockpits
• Super-soft, double-foam head pad and cushioned ear cups for long-wear comfort
• Rugged nickel-chrome hardware built for military-grade reliability

Purpose-built for military aviation, the David Clark 40493G-01 headset delivers exceptional noise attenuation and voice clarity during critical missions. With its M-7A noise-canceling microphone and passive 23 dB NRR, this headset ensures effective communication even in loud transport aircraft like the C-17 Globemaster.

The dual-ear design provides full coverage while the comfort-gel ear seals and double-foam head pad reduce fatigue over extended flights. Featuring a 5 ft coiled cord and U-174/U plug, the headset connects directly to standard military intercom systems. A single volume control knob on the ear dome allows for easy in-flight adjustments. Designed for performance and built to last, the 40493G-01 meets the rugged demands of active duty aircrew operations.

• Part Number: 40493G-01
• Headset Style: Dual-ear, over-the-head
• Microphone: M-7A electret, noise-canceling
• Cord: 5 ft coiled
• Connector: U-174/U (single-plug military standard)
• Impedance: 600 ohms (300 ohms per side in parallel)
• Noise Reduction Rating: 23 dB (passive)
• Weight: Approx. 16.5 oz (488 g)
• Comfort Features: Comfort-gel ear seals, soft double-foam head pad
• Volume Control: Single knob on ear cup