What is the tower extension number for reaching assistance?

The tower extension number for reaching assistance is correctly identified as 98990 (256 8990). This number is typically established to provide a direct line of communication for drivers and personnel needing immediate assistance or guidance while navigating airside areas.

In the context of an airport environment, having a specific extension dedicated to assistance is crucial for safety and operational efficiency. This number is likely staffed by personnel trained to address a variety of situations, including security matters, vehicle breakdowns, or any other emergencies that may arise within the airside zone.

It's important for personnel to know and memorize such critical numbers to ensure quick and effective communication during incidents. The other options might resemble typical phone numbers but do not serve the specific function of facilitating assistance within the airside environment, making them less relevant in this context.