Division 2 DEGRADATION OR TOTAL LOSS OF SERVICES OR FUNCTIONS

Inability to provide ATM services or to execute ATM functions:

1. (a)

   inability to provide air traffic services or to execute air traffic services functions;

2. (b)

   inability to provide airspace management services or to execute airspace management functions;

3. (c)

   inability to provide air traffic flow management and capacity services or to execute air traffic flow management and capacity functions.

Missing or significantly incorrect, corrupted, inadequate or misleading information from any support service^f1, including relating to poor runway surface conditions.

Failure of communication service.

Failure of surveillance service.

Failure of data processing and distribution function or service.

Failure of navigation service.

Failure of ATM system security which had or could have a direct negative impact on the safe provision of service.

Significant ATS sector/position overload leading to a potential deterioration in service provision.

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.

Prolonged loss of communication with an aircraft or with other ATS unit.