When is the gear warning horn activated during flight?

The gear warning horn is activated when the landing gear is not down and the aircraft is below a specific speed, which is 200 KIAS. This serves as an important safety feature to remind the pilot to deploy the landing gear when the aircraft is operating at lower speeds close to landing or during critical phases of flight.

When the aircraft is below this speed and the landing gear is retracted, it alerts the pilot with an audible sound to prevent the risk of landing without the gear deployed, which could result in a catastrophic failure during landing.

Other options do not correctly reflect the conditions under which the warning horn activates: maintaining gear up at high speeds, having the landing gear down at high speeds, or just focusing on takeoff situations do not trigger the warning system in the same way.