THE ACFT WAS OCCUPIED BY THE OWNER/PLT, A 42 YR OLD STUDENT PLT SEATED IN THE FRONT SEAT, AND A 41 YR OLD PRIVATE PLT, A CAREER POLICE OFFICER OF THE ANCHORAGE POLICE FORCE, WHO WAS SEATED IN THE REAR SEAT OF THIS 2 SEAT ACFT. THE SEATS WERE IN A TANDEN ARRANGEMENT. THE ACFT WAS PILOTED BY THE FRONT SEAT OWNER, BUT WAS TECHANICALLY UNDER THE COMMAND OF THE BACK SEAT PLT BY VIRTUE OF HIS RATING. ALSO BY DEFINITION THE PRIVATE (REAR SEAT) PLT IS CONSIDERED PIC TO DEFER NECESSITY FOR FAA ACTION AGAINST THE STUDENT PLT/OWNER FOR CARRYING PASS'G AGAINST REGULATION. REPORTEDLY THE ACFT SWERVED & DRAGGED A WING WHILE TAXIING IN AFTER LANDING. THE PIC REPORTEDLY HAS 210 FLT HRS OF WHICH TWO (2) WERE CREDITED TO THE TYPE OF ACFT INVOLVED IN THIS ACC. THE PIC, FAILED TO PROPERLY COMPLETE HIS MEDICAL INFORMATION, HIS BIENNIAL FLT REV STATUS, AND THE NTSB FORM 6120.1 (ACC REPORT). HE DID NOT RESPOND TO NUMEROUS REQUESTS FOR FURTHER INFO ABOUT THE ACC. THE STUDENT PLTS FORM SIMPLY STATED: SLIGHT X-WIND ON FINAL, GROUNDLOOPED AFTER TD, CAUGHT WING.