Narrative:

Before departing boulder airport with a glider in tow, I noted that the fuel gauge indicated slightly more than 10 gallons of fuel. I was relieving another pilot and afterward he verified this reading. After takeoff and climbing out to 8600 ft, I noticed that the gauge had dropped to zero. As I signaled the glider to release, the engine died from fuel starvation. I was able to glide back to the airport and landed without incident. I have begun using a dipstick to verify fuel on board when switching towplanes.

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Original NASA ASRS Text

Title: PLT OF A GLIDER TOWING ACFT RAN OUT OF FUEL DURING CLB WHILE TOWING A GLIDER AND WAS FORCED TO DISCONNECT THE GLIDER AND MAKE AN EMER FORCED LNDG BACK ON THE ORIGINATING ARPT. THERE WAS NO DAMAGE TO THE ACFT.

Narrative: BEFORE DEPARTING BOULDER ARPT WITH A GLIDER IN TOW, I NOTED THAT THE FUEL GAUGE INDICATED SLIGHTLY MORE THAN 10 GALLONS OF FUEL. I WAS RELIEVING ANOTHER PLT AND AFTERWARD HE VERIFIED THIS READING. AFTER TKOF AND CLBING OUT TO 8600 FT, I NOTICED THAT THE GAUGE HAD DROPPED TO ZERO. AS I SIGNALED THE GLIDER TO RELEASE, THE ENG DIED FROM FUEL STARVATION. I WAS ABLE TO GLIDE BACK TO THE ARPT AND LANDED WITHOUT INCIDENT. I HAVE BEGUN USING A DIPSTICK TO VERIFY FUEL ON BOARD WHEN SWITCHING TOWPLANES.

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.