These small, sometimes purple, material tags are connected to elements of plane, equivalent to covers, pins, and different security units, that should be eliminated earlier than the plane is operational. They function a distinguished visible reminder to floor crews and pilots performing pre-flight checks. A typical instance is their use on pitot tube covers, which shield these crucial airspeed sensors from particles and bugs whereas the plane is on the bottom.
Their vivid shade and clear wording contribute considerably to flight security by stopping doubtlessly catastrophic oversights. Traditionally, these tags advanced from less complicated flags or streamers, turning into standardized for improved readability and effectiveness. This standardization performs an important position in constant communication throughout totally different plane sorts and operational environments, minimizing the chance of human error.