During which Flight Condition are headsets not required?

Headsets are not typically required during high altitude operations primarily due to the environment's nature and the operational procedures involved. At altitude, particularly in controlled airspace, communication is often conducted through radio transmissions that can be clearly heard without the need for headsets, provided the aircraft is equipped with noise-reducing systems that minimize cabin noise.

In contrast, other flight conditions such as low level operations, ground operations, and close proximity operations often present higher levels of noise, distractions, and the need for constant communication. During these conditions, headsets help ensure clear communication between crew members and enhance situational awareness, making them essential for effective operation.