Browse all practice questions for the FAA En‑Route Radar Controller Certification (CKT-1) Practice Test. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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  • What is one characteristic of helicopter operations that should be considered when issuing frequency changes?
  • At minimum, how many minutes before an aircraft is expected to enter a facility's area must flight progress data be passed?
  • Which of the following is a separate departure route from an airport or terminal area to an enroute point?
  • In aviation, what is the primary purpose of a Standard Instrument Departure (SID)?
  • N1234A has a descent clearance from 12,000 feet to cross MHZ VORTAC at 6,000 feet. When can N4567B at 14,000 feet be assigned 10,000 feet?
  • What does a Standard Terminal Arrival (STAR) procedure provide?
  • Which phrase best describes the purpose of an Area Navigation (RNAV) route?
  • Except during En Route FDP operations, where should forward flight plan information be directed?
  • What minimum longitudinal separation is required in minutes when applying the 44-knot rule?
  • How should a controller prioritize the messages transmitted to pilots?
  • A12468 is requesting clearance from Jackson to Baton Rouge via V245. What are the specified altitudes for this flight?
  • Actual departure time need not be forwarded if within how many minutes of the assumed departure time?
  • What is the degree of divergence (in miles) between V18 and V417, east of MLU VORTAC?
  • The abbreviation "H" in space 28 signifies that the aircraft has been cleared to...
  • When should automation procedures be used?
  • Why is it important to maintain a current altimeter setting?
  • An "X" on a flight progress strip is used to delete what type of information?
  • At what altitude does coordination occur for aircraft departing from areas close to the ARTCC boundary?
  • How much longitudinal separation is needed when applying the 22-knot rule?
  • How must Jackson ATCT handle arriving aircraft during nonradar procedures in relation to the clearance limit?
  • Which phraseology is appropriate for determining the altitude of an aircraft operating below the lowest usable flight level?
  • According to the Aero ARTCC/Greenwood ATCT LOA, when must communication transfer occur for arriving aircraft?
  • During which phase of flight does the ARTCC primarily provide air traffic control?
  • What is the minimum vertical separation required for aircraft operating at or below FL290 from Special Use or ATC Assigned Airspace?
  • In non-radar scenarios, what are altitude changes typically based on at Aero Center?
  • Forward position reports if the time differs from the estimated time by more than how many minutes?
  • A series of predetermined maneuvers for the orderly transfer of an aircraft under instrument conditions to landing is known as what?
  • A red W on a progress flight strip indicates all of the following EXCEPT?
  • Action should be taken to obtain a position report that affects separation how many minutes after the aircraft was estimated to pass the fix?
  • When a route or altitude in a previously issued clearance is amended, what is the appropriate action?
  • How should a controller respond when a pilot declares "minimum fuel"?
  • When conditions such as weather and equipment status may affect sector operations, what should a controller do?
  • How many miles of longitudinal separation are required when using the 22-knot rule?
  • What should a controller do if they intend to delay an aircraft?
  • What is the main purpose of a flight progress strip?
  • Before issuing control instructions that will change an aircraft's heading, route, speed, or altitude, what should be ensured?
  • What is the standard procedure for issuing holding instructions for an arriving aircraft?
  • Which altitudes must aircraft assigned specific V routes (like V9, V555) operate at northbound and southbound?
  • Coordinated departures must happen if they are less than how many minutes flying time from the receiving facility's boundary?
  • Which of the following statements is true regarding NOTAM actions?
  • How often should you monitor radios and interphones?
  • When is air traffic control service provided on a first-come, first-served basis?
  • How many holding pattern templates are available for use?
  • At what altitude must Aero ARTCC protect air traffic in the terminal area until advised by Jackson ATCT?
  • During manual data transfer, coordination with the receiving ARTCC must occur if the departure point is less than how many minutes flying time from the ARTCC boundary?
  • What should a controller do if a pilot reports loss of all low frequency navigational receiving capability?
  • What is the normal clearance limit specified in a departure clearance?
  • What action should be taken if a delay exceeds the expected timeframe?
  • What does the term TCP stand for in air traffic control?
  • Which of the following is critical during a handoff between controllers?
  • What is the function of forwarding information to Military Base Operations?
  • What does holding an altitude imply in controlled airspace?
  • What is an essential component of an IFR clearance?
  • Which of the following are among the terms in which fixes or waypoints are defined?
  • Before an aircraft begins its approach, what must the pilot ensure is current?
  • At what distance from a VOR will two converging aircraft lose separation if their angle of divergence is 15 degrees?
  • After issuing a clearance that includes "IMMEDIATELY" or "EXPEDITE", what should the controller do if time allows?
  • What is a primary role of a controller when managing multiple aircraft?
  • What is a Preferential Arrival Route (PAR)?
  • A specific departure route from an airport to an en route point with no further need for flow control is known as what?
  • A process that requires specific aircraft to remain grounded may be referred to as what?
  • When should frequency changes not be issued to single-piloted helicopters?
  • When making route assignments, which aspect must be considered for airways and routes?
  • What is the minimum longitudinal separation required when using the 44-knot rule?
  • What does the term 'Tactical Air Control Party' refer to?
  • The red direction arrows in space 23 can be used to serve what purpose?
  • What is the minimum vertical separation required for aircraft on divergent courses immediately after takeoff?
  • Who needs to approve an aircraft to operate at an IAFDOF?
  • What information must be supplied to an approach control facility prior to jurisdiction transfer?
  • What is a critical phraseology for communicating to an aircraft about changes in their flight levels?
  • How many minutes before an aircraft reaches the clearance limit fix should holding instructions be issued when a delay is expected?
  • If holding instructions have been issued to an arriving aircraft, what must the controller do?
  • Why is it important for pilots to maintain the correct holding speed?
  • What is the necessary action before an aircraft enters airspace delegated to another controller?
  • How should formation flights be controlled?
  • What is the correct phraseology to authorize visual separation between IFR arriving and departing aircraft?
  • When can aircraft be cleared to hold over different fixes at the same altitude?
  • When must the approach clearance for Vicksburg be issued?
  • What is provided to all aircraft operating under IFR in controlled airspace?
  • How is controlled airspace defined?
  • In issuing altitudes for an enroute flight, what must be considered as primary factors?
  • Which is a key requirement when specifying a transition for a SID?
  • Which phraseology correctly identifies the order of information for a VFR Tower?
  • What is the correct phraseology for an aircraft reporting its altitude?
  • In a noncharted holding pattern, what is the first item in the sequence for issuing holding instructions to an aircraft?
  • If no delay is expected, when should clearance beyond the fix be issued?
  • What is NOT a reason for issuing control instructions without communication?
  • When should you issue an approach clearance?
  • Which entity assumes responsibility for control of air traffic when ATCT RADAR is out of service and CENRAP is not available?
  • The designated space on the flight progress strip for the Mode 3/A beacon code is...
  • Which of the following interphone messages has the highest priority?
  • Which of the following allows controllers to assign an inappropriate altitude for direction of flight?
  • What is the definition of "Courses whose protected airspaces are coincident, overlap, or intersect and whose angular difference is greater than 135 degrees through 180 degrees inclusive"?
  • What must be included when issuing an IFR clearance to an aircraft?
  • What should a pilot be requested to do when issued a clearance void time at an airport not served by a tower?
  • What is the definition of a holding fix?
  • What is the primary concern when issuing altitude assignments to ensure safety?
  • Which altitude is crucial for providing separation during a descent within controlled airspace?
  • What is the correct phraseology for issuing holding instructions when the holding pattern is charted?
  • What should NOT be specified in a departure clearance when an aircraft departs from uncontrolled Class G airspace?
  • What should be done if an aircraft is at a holding pattern and a delay is encountered?
  • When the assigned altitude in a previously issued clearance is amended, the controller must restate the...
  • What must always be included in an abbreviated clearance?
  • Who is responsible for action regarding Notice to Airmen (NOTAM), if necessary?
  • A maneuver conducted by a pilot when an instrument approach cannot be completed to a landing is referred to as a what?
  • What does the acronym EDCT stand for in air traffic control?
  • When is it permissible to assign an altitude to an aircraft?
  • What is the term for the barometric pressure used to adjust a pressure altimeter?
  • What phraseology should be used to assign a higher altitude to an aircraft?
  • A controller needs to inform an aircraft currently flying at a high altitude regarding a lower altitude assignment. What should they say?
  • How should a controller phrase an instruction for maintaining a block altitude?
  • What is rarely issued by en route controllers?
  • When is arrival information required to be forwarded to an approach control facility?
  • Which term describes "Courses whose protected airspaces are coincident, overlap, or intersect and whose angular difference is 45 degrees through 135 degrees inclusive"?
  • When should arrival information be forwarded to a VFR Tower?
  • When should operational information be relayed to an aircraft?
  • Which category of courses overlaps, intersects, or coincides with an angular difference between 45 and 135 degrees?
  • What is the lateral separation distance provided for an aircraft on an established airway within 51 miles from the NAVAID?
  • Which instruction should be followed regarding issuing control instructions during military operations?
  • Which of the following is NOT a required condition for visual separation authorization in non-approach control towers?
  • Which of the following is NOT considered controlled airspace?
  • During military operations, when should control instructions be issued?
  • What is the standard longitudinal separation required between DME-equipped and RNAV-equipped aircraft using ATD?
  • What is the definition of an ARTCC?
  • What is the correct phraseology to clear a pilot for a particular approach?
  • N74Y has been cleared to descend from 8,000 feet at pilot's discretion. When can N4567B be assigned 8,000 feet?
  • What is the proper phraseology for confirming altitude information for an aircraft in level flight?
  • What two words may be used to interrupt a lower priority interphone message?
  • The protected airspace of a holding pattern must not _______ of an airway.
  • What element is NOT required when issuing holding instructions?
  • What is defined as "Authorization by ATC for a pilot to conduct an instrument approach"?
  • When unable to approve a pilot's request for deviation from the filed flight plan, what should the controller say?
  • Which of the following is an Area Navigation (RNAV) route published for use in the United States?
  • How is an aircraft reported at other than the assigned altitude indicated on the flight strip?
  • What defines "Courses whose protected airspaces are coincident, overlap, or intersect and whose angular difference is less than 45 degrees"?
  • What phraseology should be avoided while giving holding instructions when a holding pattern is charted?
  • When two aircraft depart adjacent airports and diverge by 55° after takeoff, what is the minimum required separation time?
  • Which situation is NOT given first priority?
  • What is the proper order of phraseology for hold for release instructions?
  • What happens if the protected airspace of a holding pattern overlaps with an airway?
  • When should departure clearances be issued during ground delays?
  • Monroe ATCT must transition arrivals prior to what distance east of MLU VORTAC?
  • In air traffic control, the term "OVER" signifies what?
  • What should a controller do when a pilot reports a malfunctioning NAVAID?
  • When issuing a void time, if the time to “Advise” is in the next hour, what format should be used?
  • What factors determine the size of the protected airspace in a holding pattern?
  • How should a controller inform an aircraft expecting an altitude change?
  • If approach control service is not provided, the altimeter setting should be issued at what distance from the destination airport?
  • What is the primary concern when coordinating altitude assignments for northbound and southbound operations?
  • Before issuing a clearance for departure from Class E airspace without airport traffic control service, what must the air traffic controller obtain?
  • What should a controller do if a pilot requests a departure route?
  • What aspect of an aircraft's departure clearance might change significantly when moving from controlled to uncontrolled airspace?
  • A pilot with a cruise clearance is authorized to do what?
  • Which aircraft control must be maintained if radar information is unserviceable?
  • What is defined as the distance measured from a point in space by systems using area navigation reference capabilities that are not subject to slant range errors?
  • What does the term 'surface area' refer to in aviation?
  • In what circumstance should nonradar separation be used over radar separation?
  • Under nonradar procedures, when does Aero ARTCC assume responsibility for control of air traffic?
  • What is the significance of understanding EFC time?
  • What is an essential component of relaying operational information to an aircraft?
  • When should a flight progress strip be removed from the sector?
  • What is the primary responsibility of the air traffic controller before authorizing a non-approach control tower to provide visual separation?
  • What should be stated when an aircraft is leaving an assigned altitude after a descent clearance?
  • What type of instrument approach should be conveyed to a VFR Tower?
  • In case of an emergency situation, the controller should?
  • The Expect Further Clearance (EFC) time given to pilots for KMLU arrivals is?
  • Which phraseology is used to obtain altitude reports from an aircraft?
  • What is defined as a geographical position determined by a fix, an azimuth, and a distance from the fix?
  • What altitude must be used for aircraft departing from Monroe ATCT entering center airspace before 6,000 feet?
  • What happens to the "EXPEDITE" instruction if a clearance is reissued without it?
  • If an aircraft cannot accept clearance and holding instructions are issued, what is crucial to ensure?
  • What indicates a failure in separation for an aircraft during holding?
  • Controllers should transmit only those messages that are necessary for air traffic control and...
  • What is the main purpose of a holding pattern in aviation?
  • The instructions to an aircraft that the pilot make communications transfer at a specified time, fix, or altitude may be omitted when?
  • What defines a set of rules that enhances user flight planning within published guidelines?
  • If 2 minutes of separation is authorized, courses must diverge within how many minutes after takeoff?
  • Which of the following is considered a lower priority message?
  • In air traffic control communication, what does an underlined altitude indicate?
  • What must a controller do when an aircraft is landing near the boundary of adjacent center airspace?
  • What in air traffic control documents the agreements and communication procedures regarding aircraft operations?
  • For aircraft operating above FL290, what is the minimum vertical separation from Special Use or ATC Assigned Airspace?
  • What is the primary focus of all air traffic controller communications?
  • What does EFC stand for in aviation terms?
  • The symbol "D" in space 28 of a flight progress strip indicates an aircraft has been cleared to...
  • Why does an airport departure time NOT provide separation for an aircraft departing KJAN or KGWO needing separation at MHZ or SQS?
  • When transferring control of an aircraft, which controller must be communicated with?
  • N281, a Piper Apache, is requesting clearance from Jackson to Greenville via V74. What are the correct altitudes for this flight?
  • What is a critical consideration for military aircraft transitioning to different destinations?
  • What is the standard phraseology to release N123 two minutes after N65K?
  • All interphone messages should be terminated with...
  • What information must be specified in an airport traffic control clearance for departing aircraft?
  • To ensure minimum vertical separation when pilots are not executing pilot's discretion descent, what should be assigned?
  • If times are the same, how should flight progress strips be sequenced?
  • Which of the following is the correct radio message format to initiate contact with an aircraft?
  • What is the required data for executing an instrument approach to an airport?
  • IFR departure clearance compatibility may be verified by asking the pilot about compliance with which aspect?
  • When a pilot requests a change in altitude due to traffic conditions, what should the controller do?
  • An altimeter setting must be issued to an en route aircraft operating below FL180 at least how many times in your area of jurisdiction?
  • What should be given first priority by controllers?
  • What is referred to as a route between two terminals within an ARTCC's area?
  • Under what condition are aircraft on diverging radials considered to be laterally separated?
  • When must the direction of turns be included in a holding clearance?
  • What must occur before deviation from established procedures in the Aero ARTCC and Jackson ATCT LOA?
  • When must Jackson ATCT coordinate arriving aircraft actions?
  • A Monroe ATCT nonradar departure must NOT be cleared above 6,000 feet until:
  • If N1234N is descending from 12,000 feet to 6,000 feet, when can N4567B at 14,000 feet be assigned 12,000 feet?
  • Which of the following actions should be taken when an aircraft is reported at an inappropriate altitude?
  • What is the proper phraseology for instructing an ascent to a higher altitude from a lower one?
  • What is the typical holding speed range for civil aircraft?
  • What should be issued to ensure positive control and standard separation if a pilot cannot accept a clearance?
  • Which of the following actions has the highest priority for air traffic controllers?
  • What is the primary reason for issuing holding instructions?
  • What is the correct phraseology for assigning an altitude of one thousand to an enroute aircraft currently at nine thousand?
  • What action should a controller take when there is a potential sector overload?
  • If two aircraft are on radials diverging by less than 15 degrees, what is their separation status?
  • What should be used to determine the greater distance for lateral separation?
  • What is the correct phraseology to clear an aircraft if its route has not changed beyond a holding fix?
  • If an aircraft encounters severe turbulence, what should be done regarding altitude assignment?
  • What is the correct procedure for assigning an altitude during initial departure instructions?
  • What recording indicates an inappropriate altitude for direction of flight on the flight progress strip?
  • How should you determine a distance for lateral separation if divergence is between two values in the divergence table?
  • What should be included in clearances relayed through an airline dispatcher?
  • N12B is at 6,000 feet and has been cleared for approach. When can another aircraft be assigned 6,000 feet?
  • How would you phrase the Jackson altimeter of 30.12?
  • What must be specified when issuing holding instructions?
  • What is the minimum vertical separation required at and below FL410?
  • An aircraft at FL310 is cleared to descend to 12,000 feet. The altimeter setting should be issued for the weather reporting station nearest to what?
  • When an airborne military aircraft changes its destination, what action is required?
  • What is a possible reason for issuing an inappropriate altitude to an aircraft?
  • A procedure that initiates verbal coordination for departure release approval is defined as what?
  • Under what condition should DME/ATD procedures be used?
  • A predetermined maneuver for aircraft to remain within specified airspace awaiting further clearance is known as what?
  • What is the standard procedure regarding aircraft departing from airports located in Class G airspace?
  • Which of the following statements is true regarding the provision of air traffic control?
  • What is the phraseology to reroute an aircraft via Victor Five New Hope without changing the remainder of the route?
  • What is the action required when an arrival aircraft is holding due to ATC instructions?
  • What is the correct phraseology for issuing a clearance to an aircraft utilizing an airway above/below its route structure?
  • What is meant by uncontrolled airspace?
  • When a Standard Instrument Departure (SID) is assigned, the transition is included if...
  • What does a release time specify?
  • When both JAN APCH and MLU APCH lack FDIO, what action regarding “cleared as filed” is taken?
  • What defines a Standard Instrument Departure (SID)?
  • Where should a cruise clearance with no crossing restriction be issued?
  • What must Aero ARTCC protect until Jackson ATCT advises that an arrival aircraft is under tower control?
  • At Greenwood ATCT, when is arrival information NOT required to be forwarded?
  • What holding speed is typically used by military aircraft?
  • What does a horizontal arrow (→) in space 20 indicate?
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