H3312 David Clark H3312 Ground Support Headset. David Clark Company Ground Support Headsets are designed to facilitate communication when background noise or distance makes it extremely difficult. During Push-Back Operations, communication is critical to ensure the safety of everyone in the vicinity, and the protection of the aircraft from accidental damage. Our Noise Attenuating Headsets provide the hearing protection required and our Noise Canceling Microphones ensure clear, crisp transmission regardless of the noise level.
