What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
After landing cub N1947S at Lakeland Linder airport and taxiing off runway 9 onto taxiway A-3, pilot stopped the aircraft and contacted ground control. Pilot was given instructions to taxi to neel aviation via hotel and golf taxiways. Upon power-up to turn right on golf. The p-factor turned the nose to the left. Full right rudder/tailwheel steering had no effect. Pilot immediately pulled the power and went for the heel brakes, but the aircraft rolled into the taxiway sign sign and stopped - estimated speed was 3 to 4 mph. ATIS golf was in effect, with winds at 020 degrees at 8 knots.
As the FAA filed it
AFTER LANDING CUB N1947S AT LAKELAND LINDER AIRPORT AND TAXIING OFF RUNWAY 9 ONTO TAXIWAY A-3, PILOT STOPPED THE AIRCRAFT AND CONTACTED GROUND CONTROL. PILOT WAS GIVEN INSTRUCTIONS TO TAXI TO NEEL AVIATION VIA HOTEL AND GOLF TAXIWAYS. UPON POWER-UP TO TURN RIGHT ON GOLF. THE P-FACTOR TURNED THE NOSE TO THE LEFT. FULL RIGHT RUDDER/TAILWHEEL STEERING HAD NO EFFECT. PILOT IMMEDIATELY PULLED THE POWER AND WENT FOR THE HEEL BRAKES, BUT THE AIRCRAFT ROLLED INTO THE TAXIWAY SIGN SIGN AND STOPPED - ESTIMATED SPEED WAS 3 TO 4 MPH. ATIS GOLF WAS IN EFFECT, WITH WINDS AT 020 DEGREES AT 8 KNOTS.