CAAP RPA Controller key terms

An official CAAP document proving ownership and lawful registration of a remotely piloted aircraft system, issued after the operator submits the required technical and ownership documents. It must be carried or available whenever the aircraft is operated.

A CAAP-issued authorisation granted to an entity that has demonstrated compliance with organisational, personnel, and safety requirements, permitting it to conduct RPAS operations for commercial or other approved purposes under stated conditions.

A restricted airworthiness approval issued for a remotely piloted aircraft that meets an accepted design and maintenance standard but does not hold a conventional type certificate, allowing flight within specified limitations only.

The person or organisation holding operational control of a remotely piloted aircraft system and accountable for compliance with regulations, crew qualifications, maintenance, and record-keeping, regardless of who physically manipulates the controls.

The certificated crew member who manipulates the controls of a remotely piloted aircraft and is responsible for its flight path, separation from obstacles, and adherence to clearances and operating limitations during a flight.

A trained crew member positioned to maintain unaided visual contact with the aircraft and surrounding airspace, reporting traffic, obstacles, and hazards to the remote pilot when the pilot's own scan is obstructed or task-saturated.

The condition in which the remote pilot or a visual observer can see the aircraft continuously without magnification, allowing the pilot to monitor its attitude, position, and surrounding traffic and to maintain safe separation from other aircraft and persons.

Operations in which the aircraft is flown outside continuous unaided visual contact, requiring specific CAAP approval, additional detect-and-avoid capability, and documented risk mitigation before it may be conducted.

Airspace of defined dimensions within which air traffic control service is provided, classified into classes A to E, and in which RPAS operations generally require prior clearance or a specific authorisation from the responsible ATS unit.

A lettered category (A through G) defining the services provided, the clearance requirements, and the flight rules that apply within a volume of airspace, determining whether and how an RPAS may enter it.

Airspace of defined dimensions within which aircraft flight is forbidden, typically established for security or national interest reasons; RPAS operations inside such areas are not permitted except under very specific state authorisation.

Airspace within which flight is permitted only under specified conditions or with prior permission from the controlling authority, often activated by published notice and relevant to RPAS operations near airports, military sites, or sensitive installations.

Airspace of defined dimensions in which activities hazardous to flight may occur at specified times, such as firing, parachuting, or training; RPAS pilots should avoid it or confirm activity status before entering.

A Notice to Air Missions distributed to flight crews describing temporary changes or hazards in the airspace or at an aerodrome, such as closed areas, crane activity, or UAS-specific restrictions, which must be checked during flight planning.

The maximum approved mass of the remotely piloted aircraft at the start of take-off, including payload, batteries, and any fitted equipment, used to determine the regulatory category and performance limitations applicable to the flight.

The command and control communications path between the remote pilot station and the aircraft, carrying uplink commands and downlink telemetry; its integrity and latency directly determine whether the aircraft can be safely controlled.

A failure or unacceptable degradation of the command and control link, triggering pre-programmed aircraft behaviour such as holding, returning to a designated point, or landing, and requiring the pilot to follow documented contingency procedures.

The pre-set automatic response of an RPAS when a critical failure occurs, such as loss of link or low battery, designed so the aircraft proceeds to a safer state rather than continuing uncontrolled.

An automated mode in which the aircraft navigates back to a stored home point, usually climbing to a set altitude first; pilots must confirm the altitude clears obstacles and that the mode suits the current environment.

The geographic position recorded by the aircraft as its reference for automatic return, normally set at take-off or updated in flight; an incorrect home point can send the aircraft to a hazardous location during failsafe activation.

A software-defined boundary that limits where the aircraft may fly, often loaded from a database of sensitive or restricted locations; it is an aid only and does not relieve the pilot of legal responsibility for airspace compliance.

The usable flight time available from the installed power source under given load, temperature, and wind conditions, calculated with a reserve so the aircraft can return and land before depletion affects control authority.

The process of calculating the energy or fuel needed beyond the planned sortie so that a diversion, hold, or go-around remains possible; for battery RPAS this means retaining a defined percentage of capacity on landing.

A pre-flight assessment of the operating location covering obstacles, terrain, bystanders, electromagnetic interference sources, emergency landing areas, and access routes, performed before launch to identify hazards and plan mitigations.

A systematic check of the aircraft, control station, data link, power source, and payload before flight, confirming airworthiness, correct configuration, and charge state so that defects are found on the ground rather than in the air.

The practice of using written, challenge-and-response checklists at defined phases of operation rather than relying on memory, reducing omission errors especially under time pressure or distraction.

A crew member's accurate perception of aircraft state, traffic, weather, terrain, and task demands, together with the ability to project how those factors will develop in the next few minutes.

The effective use of all available resources, including crew members, equipment, and information, through clear communication, task allocation, and mutual monitoring to maintain safety during flight operations.

A state of reduced vigilance arising from routine or repeated uneventful operations, causing crew members to skip checks or accept deviations; it is a common precursor to RPAS accidents in familiar locations.

A structured process for choosing the safest course of action by identifying hazards, assessing risk, and selecting and reviewing a response, applied continuously from planning through recovery and shutdown.

A documented evaluation of the likelihood and severity of identified hazards for a specific operation, used to decide whether controls are adequate or whether the flight should be modified or cancelled.

A pre-briefed set of actions for foreseeable abnormal events such as lost link, low battery, sudden weather deterioration, or airspace intrusion, ensuring the crew responds promptly and consistently rather than improvising.

The immediate actions taken to protect people and property when an RPAS failure or external hazard threatens uncontrolled flight, prioritising the safety of persons on the ground over preservation of the aircraft.

An authorisation from an air traffic control unit for an aircraft to proceed under specified conditions, which an RPAS operator must obtain and comply with before entering controlled airspace or an active restricted area.

The procedure in which a pilot repeats back the safety-critical elements of an ATC instruction, such as levels, headings, and frequencies, so the controller can verify that the message was received and understood correctly.

The standardised set of spoken word substitutes for letters, used in radiotelephony to spell out identifiers, registration marks, and unclear words so that they are transmitted without ambiguity over noisy channels.

The agreed wording and structure used in aviation radio communications, chosen so that instructions and reports are brief, unambiguous, and understood identically by all parties regardless of language background.

A rapid change in wind speed or direction over a short distance, which can abruptly alter an RPAS ground speed and attitude during low-level flight, particularly near buildings, ridges, and during convective weather.

The altitude at which the aircraft would perform in the current atmospheric conditions, higher than true altitude when air is warm, humid, or low in pressure, reducing lift and propeller efficiency during low-level operations.

The practice of transmitting or recording the aircraft's location at defined intervals or waypoints so that the operator and any controlling authority know where it is and can respond quickly if contact is lost.

A position expressed as latitude and longitude in degrees, minutes, and seconds or decimal degrees, the standard reference used in flight planning, geofencing, and position reports for RPAS operations.