Narrative:

At lga due to hydraulic fluid leak, maintenance took our aircraft OTS. A spare aircraft was towed from the hangar where maintenance had been performed on the APU and the #1 fuel quantity system. Aircraft required an origination preflight inspection. This was performed at approximately XX00 local. Predep and takeoff were normal. During climb out, so (flight engineer) noticed #1 fuel quantity decreasing rapidly. Checklist was performed for fuel quantity gauge decreasing at abnormal rate. Right wing felt increasingly heavy. Declared an emergency and diverted to jfk. Landing was normal at maximum landing weight 154500 pounds. During maintenance inspection, the left wing fuel cap was missing. Estimated fuel loss, 6000-7000 pounds.

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Original NASA ASRS Text

Title: ACR B727 CAME FROM MAINT HANGAR FOR RPTR FLT WHEN A PREFLT INSPECTION WAS MADE. DURING CLB SO OBSERVED RAPID FUEL DEPLETION FROM L WING TANK. FLC DECLARED EMER AND DIVERTED FOR A SAFE LNDG. FUEL CAP WAS DISCOVERED MISSING.

Narrative: AT LGA DUE TO HYD FLUID LEAK, MAINT TOOK OUR ACFT OTS. A SPARE ACFT WAS TOWED FROM THE HANGAR WHERE MAINT HAD BEEN PERFORMED ON THE APU AND THE #1 FUEL QUANTITY SYS. ACFT REQUIRED AN ORIGINATION PREFLT INSPECTION. THIS WAS PERFORMED AT APPROX XX00 LCL. PREDEP AND TKOF WERE NORMAL. DURING CLBOUT, SO (FE) NOTICED #1 FUEL QUANTITY DECREASING RAPIDLY. CHKLIST WAS PERFORMED FOR FUEL QUANTITY GAUGE DECREASING AT ABNORMAL RATE. R WING FELT INCREASINGLY HVY. DECLARED AN EMER AND DIVERTED TO JFK. LNDG WAS NORMAL AT MAX LNDG WT 154500 LBS. DURING MAINT INSPECTION, THE L WING FUEL CAP WAS MISSING. ESTIMATED FUEL LOSS, 6000-7000 LBS.

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.