Trail bike rider flown to hospital A TRAIL bike rider was flown to Royal Perth Hospital today with serious injuries following a crash at a renowned dirt track north of Midland. The 19-year-old is believed to have come off his bike while riding at the Dirt Rider Heaven motocross park in Mogumber just after 11am. The rescue helicopter was sent to the scene to fly the injured rider back to Perth. A spokesman from St John Ambulance said the extent of the rider's injuries are still unknown but it is believed he might have sustained suspected fractures.