As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT WAS A SOLO STUDENT PRACTICING GROUND REFERENCE MANEUVERS. THERE WAS A MOMENTARY POWER LOSS ABOUT 1-2 SECONDS. THE PILOT ELECTED TO MAKE A PRECAUTONARY LANDING AT WHICH TIME THE ENGINE HAD ANOTHER MOMENTARY POWER INTERRUPTION. THE AIRCRAFT IS GROUNDED PENDING FURTHER INVESTIGATION.