Aircraft operators are responsible for the security of the aircraft. When aircrafts are not in service and unattended, their doors are to be closed and the steps removed - in order to prevent or control access to these aircrafts. The various other measures may include :
- Deploying personnel to control access to aircraft.
- Fitting and locking doors affording access to air steps to aircraft.
- Closing the doors of aircraft, which afford access from air steps.
- Withdrawing the steps from the aircraft
It is recommended that to the extent practicable, the screening of passenger be conducted out of view from public landside areas, in order that the procedures can be shielded from oversight by person having hostile intent, i.e. circumvention of the screening procedures. Passenger searching should normally be conducted openly, but facilities should be available to undertake searches in private. If for any reason passenger of a particular flight are searched to an enhanced security standard, they must have no contact with passengers who are not searched to the same standard.