Runway Incursions

  • What is a Runway Incursion?
    • Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take off of aircraft.
    • Surface Incidents are those incidents, which did not involve potential aircraft conflicts; those are now classified as C or D runway incursions. Category C or D incursions are low-risk incidents with either no conflict potential or ample time or distance to avoid a collision.
  • There are four categories of runway incursions:
    • Category A is a serious incident in which a collision was narrowly avoided
    • Category B is an incident in which separation decreases and there is a significant potential for collision, which may result in a time critical corrective/evasive response to avoid a collision.
    • Category C is an incident characterized by ample time and/or distance to avoid a collision.
    • Category D is an incident that meets the definition of runway incursion such as incorrect presence of a single vehicle/person/aircraft on the protected area of a surface designated for the landing and take-off of aircraft but with no immediate safety consequences.
Operational Incidents Pilot Deviations Vehicle/Pedestrian Deviations
Action of an Air Traffic Controller that results in: Less than required minimum separation between 2 or more aircraft, or between an aircraft and obstacles, (vehicles, equipment, personnel on runways) or Clearing an aircraft to take off or land on a closed runway Action of a pilot that violates any Federal Aviation Regulation Example: a pilot crosses a runway without a clearance while enroute to an airport gate Pedestrians or vehicles entering any portion of the airport movement areas (runways/taxiways) without authorization from air traffic control

Runway Incursion Severity

Available Reaction Time Evasive of Corrective Action Environmental Conditions Speed of Aircraft and/or Vehicle Proximity of Aircraft and/or Vehicle

Increasing Severity

Category D

Category C

Category B

Category A

Accident

Incident that meets the definition of runway incursion such as incorrect presence of a single vehicle/person/aircraft on the protected area of a surface designated for the landing and take-off of aircraft but with no immediate safety consequences.

An incident characterized by ample time and/or distance to avoid a collision.

An incident in which separation decreases and there is a significant potential for collision, which may result in a time critical corrective/evasive response to avoid a collision.

A serious incident in which a collision was narrowly avoided.

An incursion that resulted in a collision

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