Narrative:

Left engine aircraft X discrepancy text, left and right thrust levers stiff and difficult to move forward thrust. Per request of my supervisor, I removed the lower torque box per maintenance manual 76-11-10-004-001 paragraph east in order to determine the condition of the throttle cable linkage and ffg (fuel flow governor) lever assembly. Reinstalled torque box per maintenance manual 76-11-10-404-015. Found rotary lever within limits per amm 73-21-01. At that point, noted throttle lever travel felt stiff even when disconnected. Updated text, provided turnover to my supervisor and an assigned mechanic, stating the levers felt stiff even when disconnected. The mechanic asked did I reconnect the box. I said 'yes, but the levers still bind when pushed at the same time.' later that evening while driving home, I called supervisor XD20 am, and asked if they had ordered a cable, and a teleflex assembly. He said, 'don't worry about it because whatever you did fixed it.' I said, 'what?' I said 'all I did was take the box off and put it back on.' supervisor said, 'well they're good with it, (technicians) and they are going to sign it off.' I said 'per what? Me taking it off and putting it back on.' supervisor said 'technicians are going to clean some stuff up and I told them to check everything out.' it was later discovered, upon engine start up (at the hangar), an uncommanded rapid acceleration occurred. Subsequent troubleshooting revealed that the lower control box was misaligned and improperly installed on the left engine.

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Original NASA ASRS Text

Title: DURING A L ENG TEST RUN ON A B757-200 TECHNICIANS EXPERIENCED RAPID UNCOMMANDED ACCELERATION. FOUND LOWER CTL BOX IMPROPERLY INSTALLED AND MISALIGNED.

Narrative: L ENG ACFT X DISCREPANCY TEXT, L AND R THRUST LEVERS STIFF AND DIFFICULT TO MOVE FORWARD THRUST. PER REQUEST OF MY SUPVR, I REMOVED THE LOWER TORQUE BOX PER MAINT MANUAL 76-11-10-004-001 PARAGRAPH E IN ORDER TO DETERMINE THE CONDITION OF THE THROTTLE CABLE LINKAGE AND FFG (FUEL FLOW GOVERNOR) LEVER ASSEMBLY. REINSTALLED TORQUE BOX PER MAINT MANUAL 76-11-10-404-015. FOUND ROTARY LEVER WITHIN LIMITS PER AMM 73-21-01. AT THAT POINT, NOTED THROTTLE LEVER TRAVEL FELT STIFF EVEN WHEN DISCONNECTED. UPDATED TEXT, PROVIDED TURNOVER TO MY SUPVR AND AN ASSIGNED MECH, STATING THE LEVERS FELT STIFF EVEN WHEN DISCONNECTED. THE MECH ASKED DID I RECONNECT THE BOX. I SAID 'YES, BUT THE LEVERS STILL BIND WHEN PUSHED AT THE SAME TIME.' LATER THAT EVENING WHILE DRIVING HOME, I CALLED SUPVR XD20 AM, AND ASKED IF THEY HAD ORDERED A CABLE, AND A TELEFLEX ASSEMBLY. HE SAID, 'DON'T WORRY ABOUT IT BECAUSE WHATEVER YOU DID FIXED IT.' I SAID, 'WHAT?' I SAID 'ALL I DID WAS TAKE THE BOX OFF AND PUT IT BACK ON.' SUPVR SAID, 'WELL THEY'RE GOOD WITH IT, (TECHNICIANS) AND THEY ARE GOING TO SIGN IT OFF.' I SAID 'PER WHAT? ME TAKING IT OFF AND PUTTING IT BACK ON.' SUPVR SAID 'TECHNICIANS ARE GOING TO CLEAN SOME STUFF UP AND I TOLD THEM TO CHK EVERYTHING OUT.' IT WAS LATER DISCOVERED, UPON ENG START UP (AT THE HANGAR), AN UNCOMMANDED RAPID ACCELERATION OCCURRED. SUBSEQUENT TROUBLESHOOTING REVEALED THAT THE LOWER CTL BOX WAS MISALIGNED AND IMPROPERLY INSTALLED ON THE L ENG.

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.