What term should not be used until the Chart Supplement U.S. is updated for permanently shortened runways?

The term that should not be used until the Chart Supplement U.S. is updated for permanently shortened runways is "Full length." When referring to runways in aviation, precise terminology is critical for safety and operational clarity. "Full length" implies that the runway is available and usable in its entirety, which may not be the case if a runway has been permanently shortened.

If "Full length" were to be used in documentation or communication when the runway's length has changed permanently, it could mislead pilots and air traffic controllers about the actual runway dimensions, leading to potential safety hazards during takeoff, landing, and taxiing.

The other terms, while they convey various aspects of runway length, can provide a clearer understanding of the situation. For example, "Shortened length" and "Reduced length" indicate a limitation on the runway's dimensions. "Temporary length" suggests a change that might revert, which could be valid in situations where runway length is altered for a period but is expected to return to the original configuration. Hence, it's crucial to avoid the term "Full length" until the official documentation reflects the revised runway specifications.