Narrative:

On this date; a professional maintenance facility at san marcos airport reviewed my aircraft records in preparation for a potential sale of the aircraft. At that time; it was discovered that the registration number of the aircraft had been changed a number of yrs ago (over 10). While the registration certificate reflects the new n-numbers painted on the aircraft; the airworthiness certificate was never updated to reflect the new assigned number. Apparently this condition has existed throughout 2 previous ownerships; as well as my own. Technically; the aircraft has been flown illegally; since the airworthiness certificate must show the correct n-number. Since discovery; I have halted any further flts in the aircraft; and will contact the nearest FAA FSDO to correct the issue. In the future; I will be more careful to check the registration number on the airworthiness certificate to ensure that it agrees with the registration certificate.

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Original NASA ASRS Text

Title: C205 OWNER DISCOVERS HIS AIRWORTHINESS CERTIFICATE IS INVALID DUE TO N-NUMBER CHANGE BY A PREVIOUS OWNER.

Narrative: ON THIS DATE; A PROFESSIONAL MAINT FACILITY AT SAN MARCOS ARPT REVIEWED MY ACFT RECORDS IN PREPARATION FOR A POTENTIAL SALE OF THE ACFT. AT THAT TIME; IT WAS DISCOVERED THAT THE REGISTRATION NUMBER OF THE ACFT HAD BEEN CHANGED A NUMBER OF YRS AGO (OVER 10). WHILE THE REGISTRATION CERTIFICATE REFLECTS THE NEW N-NUMBERS PAINTED ON THE ACFT; THE AIRWORTHINESS CERTIFICATE WAS NEVER UPDATED TO REFLECT THE NEW ASSIGNED NUMBER. APPARENTLY THIS CONDITION HAS EXISTED THROUGHOUT 2 PREVIOUS OWNERSHIPS; AS WELL AS MY OWN. TECHNICALLY; THE ACFT HAS BEEN FLOWN ILLEGALLY; SINCE THE AIRWORTHINESS CERTIFICATE MUST SHOW THE CORRECT N-NUMBER. SINCE DISCOVERY; I HAVE HALTED ANY FURTHER FLTS IN THE ACFT; AND WILL CONTACT THE NEAREST FAA FSDO TO CORRECT THE ISSUE. IN THE FUTURE; I WILL BE MORE CAREFUL TO CHK THE REGISTRATION NUMBER ON THE AIRWORTHINESS CERTIFICATE TO ENSURE THAT IT AGREES WITH THE REGISTRATION CERTIFICATE.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.