What is the lowest IFR landing minimum authorized for use?

The lowest IFR landing minimum authorized for use is 1800 RVR. This is the minimum visibility requirement for landing under Instrument Flight Rules (IFR) at most airports equipped with appropriate instrumentation, such as an Instrument Landing System (ILS). The visibility requirement is expressed in Runway Visual Range (RVR), which provides pilots with a measurement of how far they can see down the runway.

Choosing 1800 RVR aligns with regulations that ensure adequate visibility under which pilots must maintain situational awareness and command of their aircraft during approach and landing phases. Adhering to this minimum helps ensure safety during operations, particularly when navigating in challenging weather conditions or low visibility.

This standard does vary based on specific airport conditions and available equipment, but 1800 RVR is commonly seen as the regulatory minimum for many operations, particularly for approach procedures involving precision approaches.