A serious security incident caused a stir at Seattle-Tacoma Airport on Christmas Eve. On Delta Air Lines flight DL487 to Honolulu, a stowaway without a valid ticket boarded an Airbus A321neo. This incident raises serious questions about airport security and control systems. The uninvited passenger managed to bypass security, passed through gate control and took a seat on the plane unnoticed. He was only discovered when the plane was already taxiing to the runway. According to Delta Air Lines, the crew immediately informed airport security, whereupon the plane returned to the gate. Evacuation and further checks To clarify the situation, all passengers were asked to leave the plane. A further security check was carried out to rule out the possibility that other people had boarded without tickets or that there was a potential danger. This precautionary measure led to a significant delay to the flight. Meanwhile, airport employees and security forces searched the terminal. With the help of video surveillance footage, the stowaway was eventually located in an airport toilet. The person was arrested and the authorities began further investigations. Background and security deficiencies How the stowaway managed to bypass the various control mechanisms is the subject of the investigation. Initial reports indicate a combination of human error and technical weaknesses in the surveillance system. Security protocols at airports are designed to detect and prevent unauthorized access at an early stage. However, this incident shows that even sophisticated systems can be susceptible to manipulation or carelessness. The Seattle-Tacoma airport administration has already announced that it will conduct a comprehensive review of its security measures. Both the video surveillance and the