What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
N5500Y a Maule M7-260C tailwheel aircraft had been cleared for an immediate take off at runway 27 intersection b. the airman stated he pushed the power up and started rolling when his son shouted "stop, stop, stop!" The pilot stated he imediately applied brakes and reduced power but the aircraft pitched over on its nose. The pilot's son had seen a runway sign for 5/23 and blue taxiway lights and the aircraft was heading straight for them even though he was in the middle of the taxiway. The pilot stated he did not anticipate obstacles in the middle of a taxiway.
As the FAA filed it
N5500Y A MAULE M7-260C TAILWHEEL AIRCRAFT HAD BEEN CLEARED FOR AN IMMEDIATE TAKE OFF AT RUNWAY 27 INTERSECTION B. THE AIRMAN STATED HE PUSHED THE POWER UP AND STARTED ROLLING WHEN HIS SON SHOUTED "STOP, STOP, STOP!" THE PILOT STATED HE IMEDIATELY APPLIED BRAKES AND REDUCED POWER BUT THE AIRCRAFT PITCHED OVER ON ITS NOSE. THE PILOT'S SON HAD SEEN A RUNWAY SIGN FOR 5/23 AND BLUE TAXIWAY LIGHTS AND THE AIRCRAFT WAS HEADING STRAIGHT FOR THEM EVEN THOUGH HE WAS IN THE MIDDLE OF THE TAXIWAY. THE PILOT STATED HE DID NOT ANTICIPATE OBSTACLES IN THE MIDDLE OF A TAXIWAY.