What must MAJCOMs publish to ensure aircraft do not exceed limitations while flying an instrument approach procedure using a lower category?

To ensure that aircraft do not exceed limitations while flying an instrument approach procedure using a lower category, it is essential for MAJCOMs to publish TERPS airspace for the Instrument Approach Procedure (IAP).

TERPS, which stands for "Terminal Instrument Procedures," ensures that the procedures are designed with safety and efficiency in mind. It defines the airspace architecture around the IAP, particularly for different aircraft categories, and informs pilots about the minimum altitudes, obstacle clearance, and other critical parameters associated with the approach. This information is vital when lower category aircraft are utilizing procedures designed for higher performance aircraft.

By having published TERPS airspace, pilots can maintain awareness of the specific limitations and requirements necessary for safe operations, particularly when adapting to procedures that may not align with the aircraft's operational capabilities. Properly understanding this airspace helps prevent exceeding performance limits during the critical phases of an instrument approach.