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An AS350B helicopter exceeded the time limits on 2 airworthiness directives due to inadvertent error in reading of aircraft total time.
| Attributes | |
| ACN | 474755 |
| Time | |
| Date | 200005 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | AS 350 Astar/Ecureuil |
| Operating Under FAR Part | Part 135 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot maintenance : technician |
| Qualification | pilot : instrument pilot : commercial technician : airframe technician : powerplant |
| Experience | flight time total : 7500 flight time type : 350 |
| ASRS Report | 474755 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
As a result of misreading of aircraft total time, airworthiness directives xx-zb-yy and az-back course-xy, recurring on a 50 hour cycle, was overflown on about may/xa/00. As soon as the discrepancies were found, they were corrected by performing the airworthiness directives. A procedure is being implemented to insure that this will be avoided in the future by insuring the information as to when the airworthiness directives are due is more readily available, and easier to read.
Original NASA ASRS Text
Title: AN AS350B HELI EXCEEDED THE TIME LIMITS ON 2 AIRWORTHINESS DIRECTIVES DUE TO INADVERTENT ERROR IN READING OF ACFT TOTAL TIME.
Narrative: AS A RESULT OF MISREADING OF ACFT TOTAL TIME, AIRWORTHINESS DIRECTIVES XX-ZB-YY AND AZ-BC-XY, RECURRING ON A 50 HR CYCLE, WAS OVERFLOWN ON ABOUT MAY/XA/00. AS SOON AS THE DISCREPANCIES WERE FOUND, THEY WERE CORRECTED BY PERFORMING THE AIRWORTHINESS DIRECTIVES. A PROC IS BEING IMPLEMENTED TO INSURE THAT THIS WILL BE AVOIDED IN THE FUTURE BY INSURING THE INFO AS TO WHEN THE AIRWORTHINESS DIRECTIVES ARE DUE IS MORE READILY AVAILABLE, AND EASIER TO READ.
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.