What landmark must be crossed before descending to pattern altitude at ECKHO/FOXTR?

The correct response highlights the importance of knowing specific landmarks when approaching and descending to pattern altitude in aviation. In this case, crossing Highway 81 is the designated landmark that pilots must ensure they have passed before beginning their descent to pattern altitude at ECKHO/FOXTR. This procedure is crucial because it provides a visual reference point for pilots to ensure they are at the appropriate point in their approach sequence.

Understanding the importance of landmarks in the approach procedure aids in maintaining situational awareness and helps to ensure safe and efficient operations. Recognizing and adhering to such checkpoints is essential for effective communication and coordination with air traffic control as well.