Which approach method would a pilot choose if their aircraft cannot utilize ground-based systems?

A pilot would choose an approach with vertical guidance if their aircraft is unable to utilize ground-based systems because this approach is designed to provide altitude guidance solely through satellite-based navigation systems. Approach with vertical guidance, often associated with the use of GPS technology, allows pilots to efficiently and safely land even when traditional ground-based navigational aids like ILS (Instrument Landing System) or VOR (VHF Omnidirectional Range) are not operational.

This method is particularly advantageous in situations where the available navigational infrastructure is limited or compromised, enabling pilots to still achieve precise lateral and vertical guidance during the approach and landing phases. The reliance on satellite systems means that aircraft equipped for this type of approach can maintain safe flight operations without being dependent on ground aids, making it a practical choice in the scenario presented.