Perth Airport is warning travellers they may face delays and disruptions on Friday morning after aviation screening officers plan to walk off the job. Multiple outlets report that the action by screening staff could reduce screening capacity at the airport, potentially affecting passenger processing times and causing queues. The reports indicate that the disruption is expected to begin in the morning, though specific start times and duration are not detailed in the available information. Travellers are advised to allow extra time and be prepared for possible changes to processing arrangements at security and screening points. The reports present the walk-off as a planned industrial action that could impact airport operations, particularly passenger throughput. As details can change, the airport’s updates and guidance are expected to be the main source of information for passengers seeking the latest operational status. Overall, the coverage is consistent that the planned walk-off by screening officers is the key driver behind the potential disruption at Perth Airport.