What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During takeoff with a full tank of fuel from runway 5 of the Fairmont municipal airport (4G7) acceleration was normal. During climbout, between 200 feet and 500 feet AGL, the engine experienced a loss of power and was unable to continue climbing. The engine continued to run. The aircraft then proceeded in a left turn back to the runway. In the turn, the engine continued to lose power with a subsequent loss of altitude. The aircraft was unable to return to the airport and the student pilot made an emergency landing into the tygart river with assistance from the certified flight instructor. The aircraft was completely submerged in the river.
As the FAA filed it
DURING TAKEOFF WITH A FULL TANK OF FUEL FROM RUNWAY 5 OF THE FAIRMONT MUNICIPAL AIRPORT (4G7) ACCELERATION WAS NORMAL. DURING CLIMBOUT, BETWEEN 200 FEET AND 500 FEET AGL, THE ENGINE EXPERIENCED A LOSS OF POWER AND WAS UNABLE TO CONTINUE CLIMBING. THE ENGINE CONTINUED TO RUN. THE AIRCRAFT THEN PROCEEDED IN A LEFT TURN BACK TO THE RUNWAY. IN THE TURN, THE ENGINE CONTINUED TO LOSE POWER WITH A SUBSEQUENT LOSS OF ALTITUDE. THE AIRCRAFT WAS UNABLE TO RETURN TO THE AIRPORT AND THE STUDENT PILOT MADE AN EMERGENCY LANDING INTO THE TYGART RIVER WITH ASSISTANCE FROM THE CERTIFIED FLIGHT INSTRUCTOR. THE AIRCRAFT WAS COMPLETELY SUBMERGED IN THE RIVER.