Which of the following is required personal protective equipment (PPE) on the flight line?

Safety shoes, specifically those that are steel-toed, are required personal protective equipment on the flight line due to the hazardous environment in which aviation operations take place. The flight line is an area where aircraft are parked, maintained, and prepared for flight, making it critical for personnel to wear footwear that provides both support and protection. Steel-toed shoes help safeguard against potential injuries from dropped equipment or other heavy objects, as well as hazards associated with working around aircraft and ground support equipment. Their robust design protects workers’ feet from impact and compression, which is essential in such a dynamic and potentially dangerous setting.

Other types of footwear such as standard sneakers do not provide the necessary protection and support, while canvas gloves and short-sleeve shirts are not sufficient on their own to meet safety standards in an aviation environment where exposure to various elements and equipment can pose risks.