ANNEX III -- OCCURRENCES RELATED TO AIR NAVIGATION SERVICES AND FACILITIES

• Regulation (EU) 2015/1018 found in: Occurrence Reporting (376/2014) (Dec 2022)

ANNEX III — OCCURRENCES RELATED TO AIR NAVIGATION SERVICES AND FACILITIES Regulation (EU) 2015/1018 *Remark:* This Annex is structured in such a way that the pertinent occurrences are linked with categories of activities during which they are normally observed, according to experience, in order to facilitate the reporting of those occurrences. However, this presentation must not be understood as meaning that occurrences must not be reported in case they take place outside the category of activities to which they are linked in the list. **1. AIRCRAFT-RELATED OCCURRENCES** (1) A collision or a near collision on the ground or in the air, between an aircraft and another aircraft, terrain or obstacle ([[23]](#_ftn23)), including near-controlled flight into terrain (near CFIT). (2) Separation minima infringement ([[24]](#_ftn24)). (3) Inadequate separation ([[25]](#_ftn25)). (4) ACAS RAs. (5) Wildlife strike including bird strike. (6) Taxiway or runway excursion. (7) Actual or potential taxiway or runway incursion. (8) Final Approach and Take-off Area (FATO) incursion. (9) Aircraft deviation from ATC clearance. (10) Aircraft deviation from applicable air traffic management (ATM) regulation: (a) aircraft deviation from applicable published ATM procedures; (b) airspace infringement including unauthorised penetration of airspace; (c) deviation from aircraft ATM-related equipment carriage and operations, as mandated by applicable regulations. (11) Call sign confusion related occurrences. **2. DEGRADATION OR TOTAL LOSS OF SERVICES OR FUNCTIONS** (1) Inability to provide ATM services or to execute ATM functions: (a) inability to provide air traffic services or to execute air traffic services functions; (b) inability to provide airspace management services or to execute airspace management functions; (c) inability to provide air traffic flow management and capacity services or to execute air traffic flow management and capacity functions. (2) Missing or significantly incorrect, corrupted, inadequate or misleading information from any support service ([[26]](#_ftn26)), including relating to poor runway surface conditions. (3) Failure of communication service. (4) Failure of surveillance service. (5) Failure of data processing and distribution function or service. (6) Failure of navigation service. (7) Failure of ATM system security which had or could have a direct negative impact on the safe provision of service. (8) Significant ATS sector/position overload leading to a potential deterioration in service provision. (9) Incorrect receipt or interpretation of significant communications, including lack of understanding of the language used, when this had or could have a direct negative impact on the safe provision of service. (10) Prolonged loss of communication with an aircraft or with other ATS unit. **3. OTHER OCCURRENCES** (1) Declaration of an emergency (‘Mayday’ or ‘PAN’ call). (2) Significant external interference with Air Navigation Services (for example radio broadcast stations transmitting in the FM band, interfering with ILS (instrument landing system), VOR (VHF Omni Directional Radio Range) and communication). (3) Interference with an aircraft, an ATS unit or a radio communication transmission including by firearms, fireworks, flying kites, laser illumination, high-powered lights lasers, Remotely Piloted Aircraft Systems, model aircraft or by similar means. (4) Fuel dumping. (5) Bomb threat or hijack. (6) Fatigue impacting or potentially impacting the ability to perform safely the air navigation or air traffic duties. (7) Any occurrence where the human performance has directly contributed to or could have contributed to an accident or a serious incident. --- [[23]](#_ftnref23) Obstacle includes vehicle. [[24]](#_ftnref24) This refers to a situation in which prescribed separation minima were not maintained between aircraft or between aircraft and airspace to which separation minima is prescribed. [[25]](#_ftnref25) In the absence of prescribed separation minima, a situation in which aircraft were perceived to pass too close to each other for pilots to ensure safe separation. [[26]](#_ftnref26) For example: air traffic service (ATS), automatic terminal information service (ATIS), meteorological services, navigation databases, maps, charts, aeronautical information service (AIS), manuals.