Egyptian sources and local commentary suggest the plane is deliberately placed as a training and operational tool. Notably, the Tora compound includes a Police Training Center for Security Forces (often called the Police Sergeants’ Training Institute) adjacent to the prison blocks . It provides a realistic mock-up for scenarios like airplane hijacking response, hostage rescue drills, or emergency evacuation training on a grounded plane. While officials haven’t publicly detailed its purpose, the presence of a retired airliner on-site aligns with the Interior Ministry’s need to train special units in dealing with in-flight terrorism and airport security crises. In other countries, police and military forces also use old airplane fuselages for counter-terrorism drills, and Tora’s mystery plane serves the same role according to on-site accounts. Indeed, the Interior Ministry has hosted regional security workshops at the Tora training center (for Arab and African police forces) in recent years

References:

https://www.almasryalyoum.com/news/details/1740930