Aerocivil Colombia air traffic controller CTA foundations key terms

The point to which an aircraft is authorized to proceed under the stated clearance, distinguished from an expectation or an entire filed route.

A change in the communication relationship or frequency, which must not automatically be treated as completion of the separately defined transfer of control.

The transfer of control responsibility under the applicable procedure or agreement, requiring its actual conditions rather than inferred solely from a frequency change.

Recorded current and planned traffic information that supports monitoring and coordination but must be kept consistent with actual clearances and changes.

A surveillance method detecting reflected energy from targets, distinguished from systems requiring a cooperative coded aircraft transponder response.

A cooperative surveillance method using aircraft equipment replies, with the available identity and altitude information depending on the mode and installation.

A position-estimation technique using differences in signal arrival times at appropriately located receivers, requiring suitable geometry, timing and cooperative transmissions.

Automatic dependent surveillance broadcast, involving information broadcast from onboard systems rather than the same interrogation sequence as conventional secondary radar.

A relationship in which multiple displayed values rely on a shared sensor, data input or power source, limiting their independence as cross-checks.

Interpreting an observation or message according to the expected result, potentially allowing a clearance-readback discrepancy to remain unnoticed.

Concentration on one task or problem that causes other relevant information to be neglected, including other traffic during an emergency.

Development and use of coordination, communication, teamwork and decision skills to manage available resources and reduce operational error.

A sufficiently consistent understanding of current traffic, constraints, changes and pending actions among the people responsible for coordinated work.

A weather report describing observed conditions at a specified place and time, distinguished from a forecast of later conditions.

A runway-related visibility measure using its defined reporting convention, distinct from a general prevailing visibility value for the aerodrome.

A change of wind speed or direction over distance, potentially producing rapid aircraft-performance changes near terrain or during approach and departure.

Pressure altitude corrected for nonstandard temperature in the usual teaching definition, used to relate atmospheric density with aircraft-performance effects.

A bearing extending from a VOR station in its specified reference, distinct from the aircraft's heading or a guarantee of its actual tracking direction.

The direct spatial distance between aircraft and facility, differing from horizontal ground distance when vertical separation is significant.

Confidence-related information about the trustworthiness of navigation data for an intended use, not merely a plausible coordinate or a centered indication.