PH-200A Aircraft Ground Crew Headset for use during aircraft pushback with the aircraft flight deck. During pushback and ground maintenance procedures, when high background noise makes clear communication hard. Pushback operations are dangerous. Clear communications are essential for the safety of the Ground Crew and safe movement of aircraft. The Noise Attenuating Aircraft Headset provides hearing protection. As a result giving clear communications with the flight deck. This is important during engine start and pushback.