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A saab 340B had the elevator and aileron trim tab fittings inspected in accordance with an airworthiness directive. Technician failed to mark left elevator trim after inspection accomplished.
| Attributes | |
| ACN | 689041 |
| Time | |
| Date | 200602 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 6 |
| ASRS Report | 689041 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : work cards performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On dec/mon/05 I was assigned technical directive #X involving the inspection of the elevator and aileron trim tab fittings. After receiving instruction from my supervisor as to the scope of the inspection; I proceeded in complying with the airworthiness directive. I removed all the flight control trim fairings and found no evidence of damage and that the axial play of all surfaces were within limits outlined in the directive. However; I am unable to explain how the left elevator trim tab in question was not properly idented as being completed by punching the identify plate on the lower r-hand corner. I believe to prevent this from happening again the work card provided should have a separate signoff block for the identify mark on each flight control surface. That said the inspection part of the work card was completed in full and that it was simply an honest mistake which led to the identify plate not being marked properly.
Original NASA ASRS Text
Title: A SAAB 340B HAD THE ELEVATOR AND AILERON TRIM TAB FITTINGS INSPECTED IN ACCORDANCE WITH AN AIRWORTHINESS DIRECTIVE. TECHNICIAN FAILED TO MARK L ELEVATOR TRIM AFTER INSPECTION ACCOMPLISHED.
Narrative: ON DEC/MON/05 I WAS ASSIGNED TECHNICAL DIRECTIVE #X INVOLVING THE INSPECTION OF THE ELEVATOR AND AILERON TRIM TAB FITTINGS. AFTER RECEIVING INSTRUCTION FROM MY SUPVR AS TO THE SCOPE OF THE INSPECTION; I PROCEEDED IN COMPLYING WITH THE AIRWORTHINESS DIRECTIVE. I REMOVED ALL THE FLT CTL TRIM FAIRINGS AND FOUND NO EVIDENCE OF DAMAGE AND THAT THE AXIAL PLAY OF ALL SURFACES WERE WITHIN LIMITS OUTLINED IN THE DIRECTIVE. HOWEVER; I AM UNABLE TO EXPLAIN HOW THE L ELEVATOR TRIM TAB IN QUESTION WAS NOT PROPERLY IDENTED AS BEING COMPLETED BY PUNCHING THE IDENT PLATE ON THE LOWER R-HAND CORNER. I BELIEVE TO PREVENT THIS FROM HAPPENING AGAIN THE WORK CARD PROVIDED SHOULD HAVE A SEPARATE SIGNOFF BLOCK FOR THE IDENT MARK ON EACH FLT CTL SURFACE. THAT SAID THE INSPECTION PART OF THE WORK CARD WAS COMPLETED IN FULL AND THAT IT WAS SIMPLY AN HONEST MISTAKE WHICH LED TO THE IDENT PLATE NOT BEING MARKED PROPERLY.
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.