Narrative:

During the takeoff roll as power was established, the left engine torque gauge rolled back to zero. The aircraft autofeather system appeared to engage, despite the engine operating normally. Takeoff was aborted. Engine could possibly have over- torqued, but the DFDR will show that. My first officer and I had flown 5.5 hours this day, and I had flown 14.7 hours during the previous 2 days with a reduced rest overnight, followed by minimum compensatory rest. I felt somewhat fatigued, but not unsafe. I feel my training allowed both the first officer and me to react quickly and appropriately, but if I had been better rested we might have caught the problem earlier. Until the practice of scheduling reduced rest is stopped, I feel this problem of fatigued crew members will continue.

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Original NASA ASRS Text

Title: ABORTED TKOF.

Narrative: DURING THE TKOF ROLL AS PWR WAS ESTABLISHED, THE L ENG TORQUE GAUGE ROLLED BACK TO ZERO. THE ACFT AUTOFEATHER SYS APPEARED TO ENGAGE, DESPITE THE ENG OPERATING NORMALLY. TKOF WAS ABORTED. ENG COULD POSSIBLY HAVE OVER- TORQUED, BUT THE DFDR WILL SHOW THAT. MY FO AND I HAD FLOWN 5.5 HRS THIS DAY, AND I HAD FLOWN 14.7 HRS DURING THE PREVIOUS 2 DAYS WITH A REDUCED REST OVERNIGHT, FOLLOWED BY MINIMUM COMPENSATORY REST. I FELT SOMEWHAT FATIGUED, BUT NOT UNSAFE. I FEEL MY TRAINING ALLOWED BOTH THE FO AND ME TO REACT QUICKLY AND APPROPRIATELY, BUT IF I HAD BEEN BETTER RESTED WE MIGHT HAVE CAUGHT THE PROB EARLIER. UNTIL THE PRACTICE OF SCHEDULING REDUCED REST IS STOPPED, I FEEL THIS PROB OF FATIGUED CREW MEMBERS WILL CONTINUE.

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.