Narrative:

Left engine was required to be shut down due to the throttle linkage to the fuel control unit becoming detached, and the engine not being ctlable by the throttle. Preliminary investigation has found there may not have been a cotter pin securing the bolt through the linkage. Both the bolt and nut were found on the lower cowling with no sign of a cotter pin. This required the crew to perform a single engine landing (uneventful) into oma. There is no preflight action the flight crew could have taken to prevent this. Maintenance needs to follow established quality control standards, or revise their procedures to eliminate omission of critical steps. Supplemental information from acn 519488: while in cruise at FL350, we had a left throttle cable come apart. It ended up being in an overtemp situation. We shut the engine off by using the checklist and made a single engine approach and landing in oma. We used all the correct checklists and it was uneventful. I was the first officer and the PNF. The crew could not prevent this. It was a nut and cotter pin that fell off the linkage from the fuel control unit.

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Original NASA ASRS Text

Title: MD80 CREW E OF OMA AT FL350 HAD TO SHUT DOWN AN ENG DUE TO THROTTLE NOT BEING RESPONSIVE TO MOVEMENT.

Narrative: L ENG WAS REQUIRED TO BE SHUT DOWN DUE TO THE THROTTLE LINKAGE TO THE FUEL CTL UNIT BECOMING DETACHED, AND THE ENG NOT BEING CTLABLE BY THE THROTTLE. PRELIMINARY INVESTIGATION HAS FOUND THERE MAY NOT HAVE BEEN A COTTER PIN SECURING THE BOLT THROUGH THE LINKAGE. BOTH THE BOLT AND NUT WERE FOUND ON THE LOWER COWLING WITH NO SIGN OF A COTTER PIN. THIS REQUIRED THE CREW TO PERFORM A SINGLE ENG LNDG (UNEVENTFUL) INTO OMA. THERE IS NO PREFLT ACTION THE FLC COULD HAVE TAKEN TO PREVENT THIS. MAINT NEEDS TO FOLLOW ESTABLISHED QUALITY CTL STANDARDS, OR REVISE THEIR PROCS TO ELIMINATE OMISSION OF CRITICAL STEPS. SUPPLEMENTAL INFO FROM ACN 519488: WHILE IN CRUISE AT FL350, WE HAD A L THROTTLE CABLE COME APART. IT ENDED UP BEING IN AN OVERTEMP SIT. WE SHUT THE ENG OFF BY USING THE CHKLIST AND MADE A SINGLE ENG APCH AND LNDG IN OMA. WE USED ALL THE CORRECT CHKLISTS AND IT WAS UNEVENTFUL. I WAS THE FO AND THE PNF. THE CREW COULD NOT PREVENT THIS. IT WAS A NUT AND COTTER PIN THAT FELL OFF THE LINKAGE FROM THE FUEL CTL UNIT.

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.