If the red limit line is exceeded during pushback, whom should you contact?

Exceeding the red limit line during pushback is a significant safety concern that necessitates immediate notification of multiple parties involved in the operation. Contacting maintenance is crucial because they can assess any potential mechanical or safety issues that may have contributed to the situation. Additionally, informing a manager is essential as they oversee operational compliance and safety protocols, ensuring that corrective actions can be taken promptly. Finally, the Captain needs to be informed as the overall commander of the aircraft; they must be aware of any incidents or irregularities for operational safety and decision-making. This collective communication ensures a comprehensive approach to incident management, prioritizing safety and adherence to protocols.