What do we conduct Primary Door Inspections (PDIs) on?

Primary Door Inspections (PDIs) are specifically focused on the overwing emergency exits of an aircraft. This area is critical because these exits are designed to facilitate passenger evacuation in emergency situations. The inspection process ensures that these exits function correctly and can be opened easily when needed. By conducting PDIs on the overwing emergency exits, crew members verify that the mechanisms, seals, and overall conditions are safe and operational, which is paramount for passenger safety and compliance with aviation regulations.

While other exits, such as service exits and passenger doors, also require inspections, the PDI is distinctively aimed at ensuring the readiness of overwing emergency exits. This specific focus is essential for safety protocols and is part of the broader inspection regime that encompasses all emergency exit systems.