Narrative:

The aircraft operator maintains computerized records, including installed component history. My inspection and return-to-service of these aircraft requires a review of records, including component history, to ensure that overhaul periods and life limits are not overflown. I accepted the computer printout of the component histories with only a random audit to verify accuracy. Recently the operator requested that I audit all items. I found 2 substantial errors on component histories of aircraft I have returned to service. 1) previous cycle history was entered in place of component hours (research found it entered correctly in 1996, later changed). 2) a sub-component was listed as having an overhaul instead of retirement life. The aircraft were removed from service, the components replaced and records corrected. The operator has set up a system for periodic audits by trained personnel, including comparing current computerized records with previous printouts to reveal unwarranted changes.

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Original NASA ASRS Text

Title: A LEAD TECHNICIAN RPTS THAT DURING A COMPUTERIZED RECORD COMPONENT AUDIT ON A BELL 206 HELI TWO SUBSTANTIAL ERRORS WERE FOUND.

Narrative: THE ACFT OPERATOR MAINTAINS COMPUTERIZED RECORDS, INCLUDING INSTALLED COMPONENT HISTORY. MY INSPECTION AND RETURN-TO-SVC OF THESE ACFT REQUIRES A REVIEW OF RECORDS, INCLUDING COMPONENT HISTORY, TO ENSURE THAT OVERHAUL PERIODS AND LIFE LIMITS ARE NOT OVERFLOWN. I ACCEPTED THE COMPUTER PRINTOUT OF THE COMPONENT HISTORIES WITH ONLY A RANDOM AUDIT TO VERIFY ACCURACY. RECENTLY THE OPERATOR REQUESTED THAT I AUDIT ALL ITEMS. I FOUND 2 SUBSTANTIAL ERRORS ON COMPONENT HISTORIES OF ACFT I HAVE RETURNED TO SVC. 1) PREVIOUS CYCLE HISTORY WAS ENTERED IN PLACE OF COMPONENT HRS (RESEARCH FOUND IT ENTERED CORRECTLY IN 1996, LATER CHANGED). 2) A SUB-COMPONENT WAS LISTED AS HAVING AN OVERHAUL INSTEAD OF RETIREMENT LIFE. THE ACFT WERE REMOVED FROM SVC, THE COMPONENTS REPLACED AND RECORDS CORRECTED. THE OPERATOR HAS SET UP A SYS FOR PERIODIC AUDITS BY TRAINED PERSONNEL, INCLUDING COMPARING CURRENT COMPUTERIZED RECORDS WITH PREVIOUS PRINTOUTS TO REVEAL UNWARRANTED CHANGES.

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.