When a pilot requests an intersection takeoff and deviates from the 3-minute interval, you must ______.

When a pilot requests an intersection takeoff and deviates from the established 3-minute interval between departures, issuing a wake turbulence advisory before granting the takeoff clearance is crucial. This advisory informs the pilot of potential wake turbulence hazards associated with departing aircraft, particularly if there was a preceding larger aircraft that could create significant wake turbulence.

The situation is delicate because the deviation from the standard interval could result in a hazardous situation if the aircraft is not adequately spaced. By providing a wake turbulence advisory, you ensure that the pilot is aware of the risks involved and can make informed decisions regarding their takeoff trajectory and procedures. This proactive communication helps maintain safety and situational awareness in the busy airspace surrounding the airport.

Other answers might suggest delaying the takeoff or initiating other actions, which do not adequately address the immediate concern of ensuring the pilot's awareness of wake turbulence when the standard separation time is not adhered to. Thus, the focus on issuing a wake turbulence advisory is the most responsible and safety-oriented response in this scenario.