Final answer:
For a PAR, the controller communicates with the pilot on downwind and final approach to provide guidance for a safe landing.
Step-by-step explanation:
In aviation, the term PAR stands for Precision Approach Radar. When conducting a PAR approach, the controller communicates with the pilot at specific points in the landing pattern to provide guidance for a safe landing.
On downwind, the pilot would typically hear from the controller when they are abeam the touchdown zone, which is usually about 2 miles from the runway threshold. The controller would provide updates on the aircraft's position and any necessary instructions for the approach.
During the final approach, the pilot would continue to hear from the controller until they reach the decision altitude or decision height, which is the point at which the pilot decides whether to continue the approach or go around for another attempt.