What must be operational for N711JB to execute the VOR RWY 13L/13R approach to JFK?

To execute the VOR RWY 13L/13R approach to JFK, it is essential that the VOR, LDIN (which stands for a specific Locator and Distance Information Network), and either DME (Distance Measuring Equipment) or radar be operational.

The VOR is crucial as it provides navigation guidance needed to line up with the approach path. LDIN offers vital information regarding the aircraft's distance from the runway, enhancing situational awareness and aiding in the descent profile management. Having DME or radar also supports this by giving precise distance measurements, which are critical for maintaining the correct approach configuration and ensuring that the aircraft remains within the safe operational parameters during the approach.

Each component here plays a specific role in ensuring a successful and safe approach, making their operational status vital for executing the VOR RWY 13L/13R approach accurately.