What identifies the Final Approach Fix (FAF) on a Localizer Approach?

The Final Approach Fix (FAF) on a Localizer Approach is identified by the Maltese Cross. This symbol signifies the point on the approach course where the pilot begins the final segment of the approach to the runway. Located at a specific distance from the runway threshold, the FAF alerts pilots that they are approaching the point where they should be configured for landing and ready to perform any required tasks, such as verifying the approach is stable or ensuring that the appropriate altitude is maintained.

In terms of context, the other options relate to different aspects of the approach. Threshold markers are visual aids that indicate the beginning of the runway, while the Decision Height is an altitude at or above which a decision must be made to continue the approach or go around. The Outer Marker typically designates the start of the approach and communicates important information to the pilot but does not mark the final approach fix. Thus, while they all play crucial roles in the approach procedure, it is the Maltese Cross that specifically identifies the FAF.