David Clark 43102G-09 – DC ONE-XM Special Air Crew Headset for C-17 Aircraft

The DC ONE-XM is a high-impedance aviation headset specifically designed for use with C-17 aircrew communication systems. It combines hybrid active noise cancellation and fail-safe wired operation to ensure reliable communication in high-noise environments. The headset also integrates Bluetooth® technology for auxiliary audio connection to compatible devices during flight.

While similar in build and performance, the DC ONE-XM (C-17) model is specifically configured for military aircraft systems, utilizing a U-174/U plug and a 5-foot coiled cord for enhanced cockpit mobility. It also operates at high impedance and includes components optimized for the C-17’s audio system. These design elements ensure reliable integration with U.S. Air Force communication platforms.

The headset is equipped with the M-5B electret noise-canceling microphone, which is pre-polarized for improved clarity and speech intelligibility in noisy environments. Its enhanced directional pickup pattern minimizes background sound, and the mic protector with O-ring (40062G-02) helps shield it from moisture and debris.

For optimal fit, the headpad should rest lightly against the top of the head, and the earcups should seal evenly on both sides. The boom mic can be adjusted up or down, and in or out, by flexing and rotating it until the microphone sits 1/8" from the lips. This ensures maximum noise rejection and clear transmission during communication.

No. The DC ONE-XM provides fail-safe operation, which means that even if Bluetooth or the headset batteries fail, wired communication remains fully functional. Bluetooth is optional and primarily used for connecting to devices like tablets or smartphones for non-critical audio.

The headset operates on two AA batteries, providing up to 50 hours of power for active noise cancellation and Bluetooth functions. Battery life may vary with usage and temperature. The headset continues to function for communication even when the batteries are depleted, though noise reduction will be disabled.

To clean, use a soft, damp cloth and mild soap. Avoid using solvents or alcohol-based products, as they can degrade the seals. The ear seals (15976P-07) and headpad (15977P-04) can be replaced when worn or damaged. Regular cleaning helps maintain acoustic performance and prolongs the life of your headset.

The DC ONE-XM is a standalone circumaural headset, meaning it’s designed to replace – not fit under – a helmet. However, it is lightweight (12.3 oz / 349 g) and uses low contact pressure (approximately 1.4 lbs) for comfort during extended wear, making it suitable for aircrew who don’t require helmet integration.

To remove the belt clip (41068G-03), unfasten both side latches and twist the clip off. For reinstallation, align the four locking tabs on the clip with the corresponding grooves on the module, and then snap them into place. The belt clip enables secure mounting of the inline control, providing easy access to volume and Bluetooth controls.

The headset is rated for operation between -4°F and 131°F (-20°C to 55°C), ensuring performance across a wide range of cockpit temperatures. This makes it reliable for both ground operations and high-altitude flight conditions. Proper storage in a dry, cool environment further extends its service life.

Routine inspections, conducted every six to twelve months, are recommended to check cables, connectors, and seals for signs of wear and damage. The headset should also be tested periodically to ensure consistent audio levels and microphone clarity. Using only David Clark OEM replacement parts preserves warranty coverage and ensures compatibility.

The headset is backed by a five-year warranty against manufacturing defects in materials and workmanship. This coverage is supported by David Clark’s industry-leading customer service and technical support. Warranty claims should include proof of purchase and product serial number for verification.

PJi offers OEM replacement parts for the David Clark 43102G-09 headset, including ear seals, head pads, microphones, and belt clips. Technical support and warranty service are available by contacting David Clark’s customer service department directly.