Dynamic Radar Conflict Management Flashcards
6 cards from real FEAST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Dynamic Radar Conflict Management flashcards as text
Two aircraft are converging at FL290 with a projected closest point of approach (CPA) of 3 NM lateral and 0 ft vertical in 4 minutes. The ICAO minimum radar separation standard in European airspace is 5 NM. The controller should:
Answer: Issue an immediate heading change or level change to one or both aircraft to restore 5 NM separation before the CPA
At 4 minutes to CPA with only 3 NM projected separation, the controller must act immediately — the minimum is 5 NM and the situation is trending toward infringement.
Aircraft Alpha is at FL350 heading 090, speed 480 kts. Aircraft Bravo is at FL350 heading 270, speed 460 kts. They are on reciprocal headings 30 NM apart. The closure rate is approximately:
Answer: 940 kts — because reciprocal heading aircraft add their speeds together
On converging reciprocal headings, closure rate is the sum of both aircraft's groundspeeds: 480 + 460 = 940 kts.
An STCA alert activates for two aircraft at FL280 and FL290 converging from the left and right. The controller's first action should be to:
Answer: Assess the geometry on the radar display to determine which resolution (heading or level) will be most effective
Before issuing an instruction, the controller must quickly assess the geometry to choose the most effective resolution — an ill-considered instruction could worsen the conflict.
A level-bust occurs when an aircraft climbs 400 ft above its cleared FL310 to FL314. In the same vicinity, another aircraft is cleared to FL320. The vertical separation is now:
Answer: 600 ft — insufficient; ICAO minimum is 1,000 ft vertical separation
FL320 minus actual altitude FL314 = 600 ft. The ICAO minimum vertical separation of 1,000 ft is violated.
Two aircraft are in conflict and the controller issues a heading change to Aircraft 1. Aircraft 1 does not respond. The controller should:
Answer: Immediately re-issue the instruction, confirm read-back, and if no response, consider instructing Aircraft 2 to resolve the conflict
Lack of response to a safety-critical instruction requires immediate re-issuance; if still no response, the controller must act on the other aircraft to resolve the conflict.
A controller detects a conflict between two aircraft where a heading change for Aircraft A would resolve the conflict but would take it into a third aircraft's path. The most appropriate action is to:
Answer: Resolve the original conflict using a level change or a coordinated combination of instructions to all three aircraft
When the obvious resolution creates a secondary conflict, a different resolution method (level change) or coordinated instructions must be used to avoid creating new problems.