Narrative:

Aircraft taxies in to gate 25 mins prior to departure with mechanic at controls, coming from hangar. Prepared for flight, called for push. APU air dropped to level where a cool start did not appear likely. Requested air bottle and started both engines at gate. Pushed back. Disconnected and attempted taxi. Right engine would not accelerate above ground idle regardless of throttle position. Taxied back to gate and called maintenance. Open cowling. Maintenance requested throttle be moved fore and aft 3 times. I complied. Mechanic said 'captain, it's not even connected to the fuel control. You'd better shut it down before we have a runaway acceleration. It's got to go back to the hangar.' flight canceled.

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Original NASA ASRS Text

Title: UNABLE TO CTL ENG WITH PWR LEVER AN ACR CREW CALLS FOR A MECH WHO FINDS THE CTL CABLE IS NOT CONNECTED TO THE FUEL CTL. THE ACFT HAD JUST RETURNED FROM A MAINT VISIT.

Narrative: ACFT TAXIES IN TO GATE 25 MINS PRIOR TO DEP WITH MECH AT CTLS, COMING FROM HANGAR. PREPARED FOR FLT, CALLED FOR PUSH. APU AIR DROPPED TO LEVEL WHERE A COOL START DID NOT APPEAR LIKELY. REQUESTED AIR BOTTLE AND STARTED BOTH ENGS AT GATE. PUSHED BACK. DISCONNECTED AND ATTEMPTED TAXI. R ENG WOULD NOT ACCELERATE ABOVE GND IDLE REGARDLESS OF THROTTLE POS. TAXIED BACK TO GATE AND CALLED MAINT. OPEN COWLING. MAINT REQUESTED THROTTLE BE MOVED FORE AND AFT 3 TIMES. I COMPLIED. MECH SAID 'CAPT, IT'S NOT EVEN CONNECTED TO THE FUEL CTL. YOU'D BETTER SHUT IT DOWN BEFORE WE HAVE A RUNAWAY ACCELERATION. IT'S GOT TO GO BACK TO THE HANGAR.' FLT CANCELED.

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.