A G100 TECHNICIAN TAKING THE TURNOVER ON A RUDDER BAL PROC FINDS THE WRITTEN INSTRUCTIONS CONFUSING BUT RELIED ON A TIME PROVEN PROCESS AND TECHNICAL EXPERIENCE. REQUESTED MANUAL REVISION CLARIFICATION.

2005-12 · NASA ASRS report 682860

Date: 2005-12 · Aircraft: Gulfstream I (Large Turboprop) · Phase: ground

Anomalies: aircraft-equipment-problem-critical|deviation-discrepancy-procedural-far|deviation-discrepancy-procedural-maintenance|deviation-discrepancy-procedural-published-material-policy

Synopsis

A G100 TECHNICIAN TAKING THE TURNOVER ON A RUDDER BAL PROC FINDS THE WRITTEN INSTRUCTIONS CONFUSING BUT RELIED ON A TIME PROVEN PROCESS AND TECHNICAL EXPERIENCE. REQUESTED MANUAL REVISION CLARIFICATION.

Narrative

WHEN ARRIVING AT WORK ON DEC/TUE/05 I WAS GETTING MY TURNOVER AND WORK ASSIGNMENTS WHEN THE LEAD TOLD ME ABOUT A RUDDER THAT WAS AT ANOTHER HANGAR WHICH NEEDED TO BE BALANCED. I HAD SEVERAL PROJECTS IN WORK; SO ASSUMED HE WOULD GET WITH ME WHEN HE WANTED ME. WHEN CALLED; I DROVE TO HANGAR AND MET MECH WORKING THIS ISSUE. WE HAD SEVERAL; BUT NOT ALL SHEETS OF MAINT MANUAL REF. HE ALSO HAD AN EXPERIENCED MECH HELPING HIM SET UP BAL BEAM; ETC. I QUESTIONED THEM BUT THEY SAID THE VERBIAGE WAS CONFUSING BUT FIGURES WERE ACCURATE. WHAT I HAD OF THE VERBIAGE WAS CONFUSING; BUT SETUP FOR THE MOST PART REPRESENTED WHAT WE ACTUALLY HAD SET UP ON THE BAL BEAM. THEY WALKED ME THROUGH THE PROC; WE ADDED ONE WT AND SINCE THE SIGNATURE PAPERWORK WAS NOT THERE; DISASSEMBLED THE JIG AND BOTH HEADED BACK TO NORMAL WORK PLACE. LATER; I WAS CALLED TO SIGN PAPERWORK. I WENT AND PRINTED COMPLETE MAINT MANUAL REF G-100 MAINT MANUAL 51-60-00; AND QUICKLY REVIEWED IT AND SIGNED PAPERWORK PRIOR TO LEAVING FOR THE NIGHT. I KEPT PAPERWORK AND AFTER READING IT SEVERAL TIMES MORE THOROUGHLY; THE NEXT DAY BECAME INCREASINGLY SKEPTICAL. I FELT OUT ONE MORE EXPERIENCED INSPECTOR; BUT HE ALSO WAS UNSURE OF THE PROCESS. THE PAPERWORK WAS DONE AND AT THIS POINT I FELT WE HAD A TIME PROVEN PROCESS AND NO CAUSE FOR IMMEDIATE CONCERN; BUT SINCE PAPERWORK WAS AMBIGUOUS AND NOT FOLLOWED TO THE LETTER; I AM PROTECTING MYSELF AS WELL AS STARTING PROCESS OF CLARIFYING BALANCING PROCESS.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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