Narrative:

Aircraft had just completed installation #1 engine. Runup was required to adjust and test engine installation. Attempted runup at maintenance hangar, but ran out of time due to noise abatement curfew. After discussion with management, it was determined that manager would contact department of airports for permission to perform runup and adjust on runway. Operations granted permission to accomplish task. After taxiing onto runway 25R, once receiving clearance from tower, we informed the ATC that a ground support vehicle would be going with us. We were told to standby. At the same time, we lost communication with our support vehicle via 2-WAY radio. The ground support vehicle entered, and ATC then advised me that the vehicle could not enter . I visually communicated to the ground crew to leave the runway. I then, along with second mechanic, taxied the aircraft off the runway and back to hangar. After discussion with manager, myself, and department of airport's personnel, we determined that operations was not fully aware that in order to accomplish task, we would need to have a ground crew.

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Original NASA ASRS Text

Title: A DC10 RECEIVED PERMISSION FROM TWR TO RUN AND ADJUST NEW ENG ON RWY. ACFT WAS ACCOMPANIED BY A SUPPORT VEHICLE WITH NO TWR COM. TWR ORDERED AIRPLANE AND VEHICLE OFF RWY.

Narrative: ACFT HAD JUST COMPLETED INSTALLATION #1 ENG. RUNUP WAS REQUIRED TO ADJUST AND TEST ENG INSTALLATION. ATTEMPTED RUNUP AT MAINT HANGAR, BUT RAN OUT OF TIME DUE TO NOISE ABATEMENT CURFEW. AFTER DISCUSSION WITH MGMNT, IT WAS DETERMINED THAT MGR WOULD CONTACT DEPT OF ARPTS FOR PERMISSION TO PERFORM RUNUP AND ADJUST ON RWY. OPS GRANTED PERMISSION TO ACCOMPLISH TASK. AFTER TAXIING ONTO RWY 25R, ONCE RECEIVING CLRNC FROM TWR, WE INFORMED THE ATC THAT A GND SUPPORT VEHICLE WOULD BE GOING WITH US. WE WERE TOLD TO STANDBY. AT THE SAME TIME, WE LOST COM WITH OUR SUPPORT VEHICLE VIA 2-WAY RADIO. THE GND SUPPORT VEHICLE ENTERED, AND ATC THEN ADVISED ME THAT THE VEHICLE COULD NOT ENTER . I VISUALLY COMMUNICATED TO THE GND CREW TO LEAVE THE RWY. I THEN, ALONG WITH SECOND MECH, TAXIED THE ACFT OFF THE RWY AND BACK TO HANGAR. AFTER DISCUSSION WITH MGR, MYSELF, AND DEPT OF ARPT'S PERSONNEL, WE DETERMINED THAT OPS WAS NOT FULLY AWARE THAT IN ORDER TO ACCOMPLISH TASK, WE WOULD NEED TO HAVE A GND CREW.

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.