Definition
A standardized lateral dimension, measured in feet, applied to the No Transgression Zone (NTZ) that lies between the final approach courses of two parallel runways during simultaneous independent approaches. The NTZ is centered equidistant between the two extended runway centerlines and extends 2,000 feet across — 1,000 feet on each side of its center — establishing the buffer airspace that a monitor controller watches to ensure aircraft on one approach do not stray toward the other.
Plain English
It means the protected strip of airspace between two parallel approaches is 2,000 feet across. If an aircraft drifts into that strip, controllers step in immediately to keep it clear of traffic on the next approach.
Context Anchor
Seen in discussions of simultaneous independent approaches to parallel or closely spaced runways.
Why Pilots Care
Establishes the minimum lateral separation required so aircraft on adjacent approaches do not conflict.
Grounding Statement
Picture a 2,000-foot-wide strip between two approach paths that aircraft are not supposed to enter.
Intuition Check
Do not read 2,000-foot wide as altitude or runway length. Here, wide means side-to-side distance across a protected area.
Example Sentence 1
The No Transgression Zone is 2,000-foot wide and centered between the two parallel final approach courses.
Example Sentence 2
Controllers monitor traffic to keep each aircraft within its assigned 2,000-foot wide corridor during simultaneous approaches.