Narrative:

Pushing early; with proper push crew of 2 wingmen and tug driver. We pushed back from gate X. When nearing the normal stop area; we came to a gentle stop with a slight shudder. The tug driver had me set the brakes and with a slight delay informed me that; 'I think we hit air carrier Y's plane behind us.' I noticed activity on the left side of the aircraft and informed the tug driver to let me know what happened. I was informed that we indeed had hit the left wingtip of the B737 parked at the gate; and while we had minimum damage; we would have to return to the gate to assess the damage. At that time; we called ground control and informed them of the situation. I informed the passenger as to what happened and after rather lengthy delay for inspection by airport; police; and our maintenance personnel; it was determined that the B737 would have to be moved about 5 ft forward to clear our wing so we could move forward back into the gate. We returned to the gate and blocked in at xa:40 local time. It was determined that the wingtip lens and one static wick was damaged. Parts were flown in from another station. Crew legality was an issue at the time. Supplemental information from acn 669277: I was in the push tug training on dispatch on flight. I proceeded in driving forward then turning left towards the taxi line. When I saw the main gear near the taxi line; I saw something drop on my right side so I stopped. Supplemental information from acn 669284: I was the passenger on the pushback tractor. There were two wingwalkers out there while the pushback driver pushed. When he was pushing; the wingwalker that I was looking at gave the driver the stop sign and I also was yelling out to stop. As the wingwalker and I were trying to get him to stop; the plane kept moving and ended up hitting the other plane. Supplemental information from acn 669276: I was a wingwalker on flight; on pushback I could see that we were getting too close to another aircraft. So I gave the stop signal; but the pushback tractor never stopped. Supplemental information from acn 669283: on pushback; the tractor was too close. I gave the stop signal 'X'; and tractor never stopped.

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Original NASA ASRS Text

Title: A B777 WINGTIP STRUCK A B737 VERT STAB WHEN THE TRAINEE TUG DRIVER FAILED TO RESPOND TO THE WINGWALKERS AND THE INSTRUCTOR.

Narrative: PUSHING EARLY; WITH PROPER PUSH CREW OF 2 WINGMEN AND TUG DRIVER. WE PUSHED BACK FROM GATE X. WHEN NEARING THE NORMAL STOP AREA; WE CAME TO A GENTLE STOP WITH A SLIGHT SHUDDER. THE TUG DRIVER HAD ME SET THE BRAKES AND WITH A SLIGHT DELAY INFORMED ME THAT; 'I THINK WE HIT ACR Y'S PLANE BEHIND US.' I NOTICED ACTIVITY ON THE L SIDE OF THE ACFT AND INFORMED THE TUG DRIVER TO LET ME KNOW WHAT HAPPENED. I WAS INFORMED THAT WE INDEED HAD HIT THE L WINGTIP OF THE B737 PARKED AT THE GATE; AND WHILE WE HAD MINIMUM DAMAGE; WE WOULD HAVE TO RETURN TO THE GATE TO ASSESS THE DAMAGE. AT THAT TIME; WE CALLED GND CTL AND INFORMED THEM OF THE SIT. I INFORMED THE PAX AS TO WHAT HAPPENED AND AFTER RATHER LENGTHY DELAY FOR INSPECTION BY ARPT; POLICE; AND OUR MAINT PERSONNEL; IT WAS DETERMINED THAT THE B737 WOULD HAVE TO BE MOVED ABOUT 5 FT FORWARD TO CLEAR OUR WING SO WE COULD MOVE FORWARD BACK INTO THE GATE. WE RETURNED TO THE GATE AND BLOCKED IN AT XA:40 LOCAL TIME. IT WAS DETERMINED THAT THE WINGTIP LENS AND ONE STATIC WICK WAS DAMAGED. PARTS WERE FLOWN IN FROM ANOTHER STATION. CREW LEGALITY WAS AN ISSUE AT THE TIME. SUPPLEMENTAL INFO FROM ACN 669277: I WAS IN THE PUSH TUG TRAINING ON DISPATCH ON FLT. I PROCEEDED IN DRIVING FORWARD THEN TURNING L TOWARDS THE TAXI LINE. WHEN I SAW THE MAIN GEAR NEAR THE TAXI LINE; I SAW SOMETHING DROP ON MY R SIDE SO I STOPPED. SUPPLEMENTAL INFO FROM ACN 669284: I WAS THE PAX ON THE PUSHBACK TRACTOR. THERE WERE TWO WINGWALKERS OUT THERE WHILE THE PUSHBACK DRIVER PUSHED. WHEN HE WAS PUSHING; THE WINGWALKER THAT I WAS LOOKING AT GAVE THE DRIVER THE STOP SIGN AND I ALSO WAS YELLING OUT TO STOP. AS THE WINGWALKER AND I WERE TRYING TO GET HIM TO STOP; THE PLANE KEPT MOVING AND ENDED UP HITTING THE OTHER PLANE. SUPPLEMENTAL INFO FROM ACN 669276: I WAS A WINGWALKER ON FLT; ON PUSHBACK I COULD SEE THAT WE WERE GETTING TOO CLOSE TO ANOTHER ACFT. SO I GAVE THE STOP SIGNAL; BUT THE PUSHBACK TRACTOR NEVER STOPPED. SUPPLEMENTAL INFO FROM ACN 669283: ON PUSHBACK; THE TRACTOR WAS TOO CLOSE. I GAVE THE STOP SIGNAL 'X'; AND TRACTOR NEVER STOPPED.

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.