These brightly coloured tags, usually purple and bearing the stark warning, serve a vital security operate in aviation. They act as reminders to floor crews to take away non permanent security units put in on plane previous to flight. These units would possibly embrace covers defending pitot tubes (which measure airspeed), engine intakes, or management surfaces. Leaving these safeguards in place throughout flight might 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 programs grew to become extra advanced and the necessity for non permanent security units elevated.