Default

In aviation, 'Default' refers to the standard settings or conditions that a system or device automatically reverts to when it is reset or when no other commands or instructions are given. This term is often used in the context of aircraft systems and avionics, where default settings are crucial for ensuring the safe and efficient operation of the aircraft. For example, an aircraft's autopilot system may have default settings that it reverts to in the absence of specific instructions from the pilot. These default settings are typically designed to maintain the aircraft in a stable flight condition, minimizing the risk of accidents or incidents. Similarly, the flight management system (FMS) of an aircraft may have default settings for various parameters such as speed, altitude, and route, which it uses when no other instructions are provided. These default settings are usually determined by the aircraft manufacturer based on extensive testing and are intended to optimize the performance and safety of the aircraft.