Emergency services were called to the incident near Cathedine at 16:13 BST on Sunday.
A Welsh Ambulance Service spokeswoman said the person was taken to Swansea's Morriston Hospital with minor injuries.
Mid and West Fire Service sent two crews from Brecon and one from Crickhowell to the scene.
A person has been airlifted to hospital after a small aircraft was forced to make an emergency landing in the Brecon Beacons in Powys.