During a CAT II ILS approach, what action should be taken if the runway is not in sight and there is lateral deviation?

During a CAT II ILS approach, maintaining proper alignment with the runway is critically important for a safe landing, especially when visibility is limited and the runway is not in sight. If you experience lateral deviation while on the approach, it indicates that the aircraft is not properly positioned to make a successful landing. In such a scenario, executing a missed approach is the correct action to take.

This action ensures safety by allowing the aircraft to climb away from the ground and reposition for another approach, especially when the conditions do not permit visual confirmation of the runway or when the aircraft is not aligned as required. In CAT II operations, where visibility may be minimal and precision is essential, it is vital to adhere to the missed approach procedures outlined in the approach plate.

The other choices do not adequately address the need for aligning and ensuring a safe landing. Repositioning the CAT I/CAT II switch or attempting to correct airspeed or using direct lift control will not resolve the issue of lateral deviation or the lack of runway visual acquisition and could lead to unsafe conditions. Thus, executing the missed approach is the appropriate and safe response under these circumstances.