Narrative:

On nov/tue/06; I was in charge of aircraft X on a routine move to the hangar for overnight maintenance. The aircraft had a total of 9400 pounds of fuel onboard. This complied with the minimum 4020 pounds necessary in the left and right fuel tanks to cool hydraulics per the B757 run-up checklist. On this night; inadequate allocation of manpower or manpower shortage created a backlog of aircraft on the taxiway leading to the hangar. For this reason ZZZ ground control wouldn't grant us permission to exit the terminal area until another air carrier cleared the previously mentioned traffic at the hangar. Myself and another mechanic sat on air carrier X with both engines running for approximately a 1/2 hour as the fuel quantity fell close to the level where hydraulic cooling would be compromised. Repeated calls to the hangar (production control) went unanswered. On the maintenance frequency we were instructed to gain clearance from ZZZ ground control to taxi out and make a u-turn back to the terminal. At this time; ZZZ ground control allowed us to taxi to the hangar area where we were once again held for traffic; this time it was a B727. By the time we entered company property at the hangar the aircraft total fuel dropped to 7700 pounds; insufficient to cool both the left and right hydraulics. Filed this report. Inadequate manpower to park airplanes.

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Original NASA ASRS Text

Title: A B757-200 BEING TAXIED TO THE HANGAR FROM THE TERMINAL IS DELAYED BY GND TFC. ARRIVES AT HANGAR WITH BELOW MINIMUM TANK FUEL TO COOL HYD FLUID.

Narrative: ON NOV/TUE/06; I WAS IN CHARGE OF ACFT X ON A ROUTINE MOVE TO THE HANGAR FOR OVERNIGHT MAINT. THE ACFT HAD A TOTAL OF 9400 LBS OF FUEL ONBOARD. THIS COMPLIED WITH THE MINIMUM 4020 LBS NECESSARY IN THE L AND R FUEL TANKS TO COOL HYDS PER THE B757 RUN-UP CHKLIST. ON THIS NIGHT; INADEQUATE ALLOCATION OF MANPOWER OR MANPOWER SHORTAGE CREATED A BACKLOG OF ACFT ON THE TXWY LEADING TO THE HANGAR. FOR THIS REASON ZZZ GND CTL WOULDN'T GRANT US PERMISSION TO EXIT THE TERMINAL AREA UNTIL ANOTHER ACR CLRED THE PREVIOUSLY MENTIONED TFC AT THE HANGAR. MYSELF AND ANOTHER MECH SAT ON ACR X WITH BOTH ENGS RUNNING FOR APPROX A 1/2 HR AS THE FUEL QUANTITY FELL CLOSE TO THE LEVEL WHERE HYD COOLING WOULD BE COMPROMISED. REPEATED CALLS TO THE HANGAR (PRODUCTION CTL) WENT UNANSWERED. ON THE MAINT FREQ WE WERE INSTRUCTED TO GAIN CLRNC FROM ZZZ GND CTL TO TAXI OUT AND MAKE A U-TURN BACK TO THE TERMINAL. AT THIS TIME; ZZZ GND CTL ALLOWED US TO TAXI TO THE HANGAR AREA WHERE WE WERE ONCE AGAIN HELD FOR TFC; THIS TIME IT WAS A B727. BY THE TIME WE ENTERED COMPANY PROPERTY AT THE HANGAR THE ACFT TOTAL FUEL DROPPED TO 7700 LBS; INSUFFICIENT TO COOL BOTH THE L AND R HYDS. FILED THIS RPT. INADEQUATE MANPOWER TO PARK AIRPLANES.

Data retrieved from NASA's ASRS site as of January 2009 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.