How should pilots transmit when conducting a PRM approach?

When conducting a Precision Runway Monitor (PRM) approach, pilots should transmit on the frequency instructed by Air Traffic Control (ATC). This approach is designed for closely spaced parallel runways and requires precise communication between pilots and controllers to ensure safety and efficient use of airspace.

Using the frequency provided by ATC is crucial because it allows the pilot to receive specific instructions and clearance relevant to the PRM procedure. This includes vital information such as the clearance limit, sequencing with other aircraft, and detailed guidance that is essential for the safe navigation of the approach. Clear and direct communication on the correct frequency prevents misunderstandings that could lead to dangerous situations.

If a pilot were to transmit on multiple frequencies or incorrect ones, they could interfere with other aircraft or miss essential instructions from ATC. Thus, following ATC’s directions regarding the frequency to use maintains order and safety in busy airspaces where PRM approaches are prevalent.