What statement accurately describes the use of GPS equipment without WAAS capability for IFR operations?

The correct choice highlights the necessity for specialized avionics when utilizing GPS equipment without WAAS (Wide Area Augmentation System) for IFR (Instrument Flight Rules) operations. GPS systems without WAAS do not meet the precision, accuracy, and integrity requirements mandated for certain IFR approaches. As a result, pilots operating under IFR conditions with non-WAAS GPS need to have specific equipment that allows them to safely and legally perform those operations.

These airlines equipped with the necessary avionics can still be utilized for navigation but are limited in how they can be used in more complex or precision approaches. Therefore, pilots must ensure their aircraft is properly equipped to comply with regulatory standards. Recognizing the limitations of non-WAAS GPS is crucial for flight safety and adherence to IFR regulations.