From which point may a descent be initiated to the next lower minimum altitude when cleared for the VOR/DME RWY 36 approach?

The correct response indicates that a descent can be initiated when descending from 8,900 feet at the PUC R-189. This is aligned with the approach procedures for the VOR/DME RWY 36, where specific altitudes and radio fixes are critical for safe, controlled descents.

In this scenario, the altimeter settings and the related airspace characteristics dictate that maintaining altitude while approaching the VOR/DME is crucial until reaching the specified point at 8,900 feet. Once reaching this specific altitude at the referenced radial, it allows the pilot to initiate a descent safely to the lower minimum altitude associated with the approach.

Understanding the designated altitudes and their corresponding fixes is essential for ensuring compliance with the published approach procedures and maintaining the necessary obstacle clearance throughout the descent. Therefore, knowing when a descent can be initiated based on these parameters is vital for executing the approach accurately and safely.