Which of the following is true regarding altitudes when radar vectored for final approach?

Maintaining the last assigned altitude until established on approach is a crucial procedure during final approach when being radar vectored. This ensures safety and coordinated sequencing of aircraft in the terminal airspace. By following this guideline, pilots can avoid conflicts with other aircraft and are able to stabilize their descent as they transition from en route to the final approach phase. It also allows air traffic controllers to monitor and manage altitude changes effectively.

While properly following the descent profile as published is important for precision approaches, the key factor when radar vectored is to maintain the last assigned altitude until given further instructions. This rule ensures that the aircraft remains at a safe altitude that has been determined by air traffic control, which may not always coincide with published approach procedures. Additionally, adjusting the altitude based on wind conditions or immediately descending if below the Initial Approach Fix (IAF) altitude do not align with the standard approach protocols when radar vectors are in play. The emphasis is on ensuring that pilots adhere to air traffic control instructions to maintain orderly and safe operations in busy airspace environments.