What type of approach does GRICE intersection serve in conjunction with the localizer?

The GRICE intersection is specifically associated with an Instrument Landing System (ILS) approach. This type of approach utilizes both lateral and vertical guidance to assist pilots in flying a precise flight path to the runway. The localizer component of an ILS provides course guidance, while the glide slope offers vertical guidance, allowing for a controlled descent.

The ILS approach is designed to facilitate landing in low visibility conditions, making it a key aspect of aviation safety at airports with difficult weather conditions. It requires specific aircraft equipment and pilot training, ensuring adherence to the precise flight paths established by the system.

Other approaches, such as VFR (Visual Flight Rules) or LPV (Localizer Performance with Vertical guidance) approaches, are not defined by the GRICE intersection in the same way. VFR approaches are primarily visual and do not rely on instrument guidance like ILS does, while LPV approaches, although utilizing GPS technology and providing vertical guidance, are distinct from traditional ILS setups and require different regulatory conditions. Similarly, a 'standard approach' is a broader term that doesn’t specifically reference the localizer in conjunction with the GRICE intersection in the way that an ILS approach does.