According to standard climb schedules, what is the transition airspeed after reaching 10,000 feet?

The transition airspeed after reaching 10,000 feet is indeed 290 knots indicated airspeed (KIAS). This airspeed is part of standard operating procedures that help ensure safe and efficient climb operations in controlled airspace.

Once an aircraft climbs above 10,000 feet, the airspace regulations allow for a higher airspeed limit compared to 250 KIAS, which is the maximum speed below 10,000 feet. The selection of 290 KIAS as the transition airspeed helps facilitate smoother climbs and efficient air traffic management, allowing for optimal performance and safety standards in higher altitudes, where air density is lower.

The other choices, while varying respectively in speed, either represent speeds appropriate for different phases of flight or below the regulations set for standard climb schedules after surpassing 10,000 feet.