Narrative:

After flying aircraft X 2 or 3 times, the last of which was on apr/fri/95, it was discovered by the crew flying aircraft X on may/fri/95 that the airworthiness certificate still had the old tail number from when the aircraft was in service with another air carrier. I was told that the process of getting a new airworthiness certificate was 'in the works' and that it was 'just a formality' to get the new airworthiness certificate to read the new tail number, namely aircraft X. Be this as it may, a hard copy should be with the aircraft prior to future flight, and this operation is reflected in the company, now, not flying the aircraft until the problem can be resolved. I was also told that this is a maintenance and company function. However, this notification is made out of the concern for other pilots not to make the same mistake.

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Original NASA ASRS Text

Title: FAR. ACR FLEW A RECENTLY PURCHASED ACFT WITH THE OLD AIRWORTHINESS CERTIFICATE REFLECTING THE OLD REGISTRATION (TAIL) NUMBER.

Narrative: AFTER FLYING ACFT X 2 OR 3 TIMES, THE LAST OF WHICH WAS ON APR/FRI/95, IT WAS DISCOVERED BY THE CREW FLYING ACFT X ON MAY/FRI/95 THAT THE AIRWORTHINESS CERTIFICATE STILL HAD THE OLD TAIL NUMBER FROM WHEN THE ACFT WAS IN SVC WITH ANOTHER ACR. I WAS TOLD THAT THE PROCESS OF GETTING A NEW AIRWORTHINESS CERTIFICATE WAS 'IN THE WORKS' AND THAT IT WAS 'JUST A FORMALITY' TO GET THE NEW AIRWORTHINESS CERTIFICATE TO READ THE NEW TAIL NUMBER, NAMELY ACFT X. BE THIS AS IT MAY, A HARD COPY SHOULD BE WITH THE ACFT PRIOR TO FUTURE FLT, AND THIS OP IS REFLECTED IN THE COMPANY, NOW, NOT FLYING THE ACFT UNTIL THE PROB CAN BE RESOLVED. I WAS ALSO TOLD THAT THIS IS A MAINT AND COMPANY FUNCTION. HOWEVER, THIS NOTIFICATION IS MADE OUT OF THE CONCERN FOR OTHER PLTS NOT TO MAKE THE SAME MISTAKE.

Data retrieved from NASA's ASRS site as of July 2007 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.