Narrative:

Aircraft X was sold on mar/sun/03. The aircraft was sold with 1928.0 hours on the hobbs, atft (aircraft total flying time), and 1980 hours on the engine. The new owner, while conducting the annual inspection, called me and told me I had overflown airworthiness directive 96-09-10, oil pump failure due to impeller failure. All he told me was the impeller part number was 60747, and that it was hit by the airworthiness directive and should have been changed by jul/sun/01. Now that I am no longer in possession of the books, proper research cannot be accomplished. But, per the part number (60747) and per AC43-16A, jun/xx/01, which states that 'part number 60747, aluminum oil pump impeller, is not an impeller and shaft assembly. It is an impeller that rotates on a fixed, non rotating shaft. This shaft is retained by a cotter pin passing through the oil pump housing and shaft. This confign is not affected by this airworthiness directive.' it was from this statement that I did not change the pump, which is now under question. The new owner, as of this date (apr/mon/03), has not contacted me for comment, and it still remains under question on whether or not the airworthiness directive was truly overdue.

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Original NASA ASRS Text

Title: A CESSNA 150 WAS ALLEGED TO HAVE OVERFLOWN AN AIRWORTHINESS DIRECTIVE ON AN OIL PUMP IMPELLER FAILURE. CAUSE MAY BE CONFLICT BTWN PUBS.

Narrative: ACFT X WAS SOLD ON MAR/SUN/03. THE ACFT WAS SOLD WITH 1928.0 HRS ON THE HOBBS, ATFT (ACFT TOTAL FLYING TIME), AND 1980 HRS ON THE ENG. THE NEW OWNER, WHILE CONDUCTING THE ANNUAL INSPECTION, CALLED ME AND TOLD ME I HAD OVERFLOWN AIRWORTHINESS DIRECTIVE 96-09-10, OIL PUMP FAILURE DUE TO IMPELLER FAILURE. ALL HE TOLD ME WAS THE IMPELLER PART NUMBER WAS 60747, AND THAT IT WAS HIT BY THE AIRWORTHINESS DIRECTIVE AND SHOULD HAVE BEEN CHANGED BY JUL/SUN/01. NOW THAT I AM NO LONGER IN POSSESSION OF THE BOOKS, PROPER RESEARCH CANNOT BE ACCOMPLISHED. BUT, PER THE PART NUMBER (60747) AND PER AC43-16A, JUN/XX/01, WHICH STATES THAT 'PART NUMBER 60747, ALUMINUM OIL PUMP IMPELLER, IS NOT AN IMPELLER AND SHAFT ASSEMBLY. IT IS AN IMPELLER THAT ROTATES ON A FIXED, NON ROTATING SHAFT. THIS SHAFT IS RETAINED BY A COTTER PIN PASSING THROUGH THE OIL PUMP HOUSING AND SHAFT. THIS CONFIGN IS NOT AFFECTED BY THIS AIRWORTHINESS DIRECTIVE.' IT WAS FROM THIS STATEMENT THAT I DID NOT CHANGE THE PUMP, WHICH IS NOW UNDER QUESTION. THE NEW OWNER, AS OF THIS DATE (APR/MON/03), HAS NOT CONTACTED ME FOR COMMENT, AND IT STILL REMAINS UNDER QUESTION ON WHETHER OR NOT THE AIRWORTHINESS DIRECTIVE WAS TRULY OVERDUE.

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.