Prior to the commencement of the flight, who performs an aircraft security search?

The aircraft security search is primarily the responsibility of ground personnel before the flight commences. Ground personnel are trained to identify potential security threats and ensure that the aircraft is free from any unauthorized items or dangers. This search is part of a systematic approach to maintaining aviation security, and it typically includes checking the cabin area, cargo holds, and other accessible spaces within the aircraft.

While cabin crew and flight crew are responsible for ensuring safety and security once onboard, their roles usually begin after the aircraft has been thoroughly screened and the passengers are boarding. Airport security also plays a vital role in overall airport security, but they are more focused on the screening processes and checks conducted at security checkpoints and not specifically on the aircraft itself. Hence, the designated responsibility for conducting the aircraft security search lies with ground personnel.