Definition
Air traffic controllers who have completed the specialized training and qualification required to monitor simultaneous close parallel ILS approaches using Precision Runway Monitor procedures. Their role is to watch the high-update-rate radar display dedicated to PRM operations and issue immediate breakout instructions if an aircraft deviates toward the adjacent final approach course.
Plain English
Controllers who are specially trained and authorized to monitor aircraft flying parallel approaches to closely spaced runways, ready to break an aircraft off the approach instantly if another aircraft strays into its path.
Context Anchor
Seen in discussions of PRM approaches, especially at airports that use closely spaced parallel runways for simultaneous arrivals.
Derivation
Certified comes from older words meaning “made certain” or “officially confirmed.” In this term, it means the controller is not just generally qualified as an air traffic controller, but specifically confirmed as qualified for PRM operations.
Why Pilots Care
These controllers can issue immediate corrective instructions if an aircraft deviates from its approach course, maintaining safe separation during high-density parallel operations.
Intuition Check
Do not read “certified” here as just “licensed air traffic controller.” Here it means specifically approved for PRM operations, which are a special kind of closely monitored parallel runway approach.
Example Sentence 1
At airports conducting simultaneous close parallel approaches, PRM-certified controllers monitor each final approach course on a dedicated high-resolution display.
Example Sentence 2
Pilots on the ILS were given heading corrections directly from PRM-certified controllers when a slight deviation occurred.