Which procedure is used by ATC to delay an aircraft for traffic management reasons?

• A. Release time
• B. Clearance void time
• C. Hold for release (HFR)
• D. SVFR clearance

Answer: (C)

ATC manages traffic flow by metering aircraft into busy airspace, which often requires delaying flights. The procedure designed for this is holding an aircraft and then releasing it back into the stream at a specified time. This hold-for-release method lets controllers control spacing and sequencing so arrivals and departures fit the available capacity. You’re placed in a hold at a defined fix or pattern, remain there until the assigned release time, and then you’re cleared to proceed toward the next phase of your flight. This timing-based release is what coordinates entry into the arrival or departure flow, keeping overall traffic orderly.

Other options relate to timing or clearances but don’t describe the management technique to delay for traffic flow. Release time is tied to when you’re allowed to leave a hold, but the explicit procedure that creates the delay itself is the hold for release. Clearance void time governs how long a clearance remains valid, and SVFR clearance pertains to weather-minimum, not flow management.