These brightly coloured tags, typically crimson and bearing the stark warning, serve a crucial security operate in aviation. They act as reminders to floor crews to take away momentary security gadgets put in on plane previous to flight. These gadgets may embody covers defending pitot tubes (which measure airspeed), engine intakes, or management surfaces. Leaving these safeguards in place throughout flight may have catastrophic penalties, impacting plane efficiency and management.
Their presence ensures the plane is prepared for flight, highlighting the significance of meticulous pre-flight checks. This easy but efficient system prevents doubtlessly disastrous oversights, contributing considerably to aviation security. The follow originated within the early days of aviation as plane methods turned extra complicated and the necessity for momentary security gadgets elevated.