David Clark H10-66XL ENC Aviation Headset with Battery Pack (40614G-05)
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David Clark 40614G-05
H10-66XL ENC Headset with Battery Pack
The David Clark H10-66XL (P/N 40614G-05) is a high-performance Electronic Noise-Canceling (ENC) headset designed for aviation professionals who require exceptional noise reduction, long-term comfort, and proven reliability in high-noise flight environments.
Built on David Clark’s rugged, time-tested headset platform, the H10-66XL combines passive noise attenuation with advanced electronic noise cancellation to significantly reduce low-frequency cockpit noise. The result is clearer communications, reduced pilot fatigue, and improved situational awareness during long flight operations.
This model includes an external battery pack to power the ENC system, offering dependable performance without reliance on aircraft power. The XL fit provides a more comfortable option for users who prefer a roomier headset size while maintaining a secure, stable seal.
Key Features & Benefits
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Electronic Noise Cancellation (ENC): Actively reduces low-frequency cockpit noise for clearer audio and less fatigue
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Passive Noise Reduction: Proven David Clark earcup design enhances overall noise attenuation
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XL Fit Design: Ideal for users seeking a larger, more comfortable headset fit
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External Battery Pack: Reliable ENC power source independent of aircraft systems
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Flexible Noise-Canceling Electret Microphone: Delivers clear voice transmission in noisy environments
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Rugged Construction: Built to withstand demanding aviation conditions
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Comfort-Focused Design: Soft, double-foam head pad and gel ear seals for extended wear
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Made in the USA: Trusted quality and durability from David Clark Company
Typical Applications
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Fixed-wing aircraft
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Helicopter operations
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High-noise cockpits
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Professional pilots, flight instructors, and crew members
Specifications (Typical)
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Model: H10-66XL
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Manufacturer Part Number: 40614G-05
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Type: Over-the-head aviation headset
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Noise Reduction: Passive + Electronic Noise-Canceling
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Power: External battery pack
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Microphone: Noise-canceling electret
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Fit: XL (larger fit profile)
Why Choose the David Clark H10-66XL?
The H10-66XL is an excellent choice for aviation professionals who want maximum noise reduction without sacrificing comfort or durability. Backed by David Clark’s legendary reputation, this headset delivers dependable performance flight after flight, making it a smart long-term investment for serious operators.
| General Information | |
|---|---|
| Part # | 40614G-05 |
| Manufacturer | David Clark |
| NSN | 5965015196398 |
| Shipping Information | |
|---|---|
| ECCN | 7A994 |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* |
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QUESTIONS & ANSWERS
The H10-66XL ENC headset features a selectable high/low impedance switch, allowing it to match both military and civilian aircraft communication systems. This flexibility ensures optimal audio performance across a wide range of aircraft platforms. It also eliminates the need for separate headsets when transitioning between different system configurations, making it ideal for mixed-fleet operations.
In addition to electronic noise canceling, the H10-66XL offers a certified passive Noise Reduction Rating (NRR) of approximately 27 dB. This strong baseline attenuation helps block high-frequency cockpit noise even when ENC is not active. The combination of passive and active noise reduction provides consistent performance in extremely loud environments.
The H10-66XL ENC headset uses a single 9-volt battery housed in an external battery pack. Under normal operating conditions, the battery provides up to 25 hours of continuous use. This dependable battery life supports long flight operations without frequent replacements, making it practical for professional pilots and crew.
The H10-66XL is engineered for use in noise levels up to approximately 120 dB SPL, making it well-suited for high-noise cockpits and demanding flight operations. Its ENC system targets low-frequency noise, while the circumaural earcups provide additional isolation. This combination helps maintain clear communication even in extreme acoustic conditions.
This headset features a DC-87 dynamic noise-canceling microphone built to meet stringent military specifications. It is designed to capture the user’s voice clearly while minimizing background noise interference. The microphone also maintains consistent performance at altitude, ensuring reliable communication from ground level up to high-flight conditions.
Yes, the H10-66XL is designed to allow compatibility with standard-issue oxygen and bio-chemical masks. This makes it especially valuable for military, special operations, and high-altitude flight environments. The headset maintains communication clarity even when additional protective gear is in use.
The headset includes a hybrid hinged wire/flex boom that offers up to 280° of rotation for accurate microphone placement. This allows users to quickly adjust the microphone for optimal voice pickup and comfort. The flexible design ensures stability during movement while maintaining consistent communication quality.
The H10-66XL is constructed with rugged materials, including nickel-chrome carbon steel and high-impact ABS components, ensuring long-term durability. It is built to withstand harsh aviation environments, including temperature extremes ranging from -20°C to +55°C. This robust construction supports reliable performance across demanding operational conditions.
