What was found
THE AIRPLANE GROUNDLOOPED. DISASSEMBLY REVEALED THAT THE TAIL WHEEL-LOCKING COLLAR WAS NOT INSTALLED ON THE TAILWHEEL ASSEMBLY. ALSO, THE STEERING NOTCH ON THE TAILWHEEL STEERING ARM WAS WORN SO THAT A LIGHT AMOUNT OF PRESSURE BY HAND WOULD ALLOW THE TAILWHEEL TO BE TURNED ABOUT ITS STEERING AXIS. THE MISSING LOCKING COLLAR WAS NOT APPARENT UNTIL THE TAILWHEEL WAS DISASSEMBLED.