Narrative:

On jan/wed/05 at approximately XA00; I was riding brakes on aircraft X from gate to the wash rack for an HC1 wash. We were approaching the end of the hangar on the j-line. Mr X was driving the tub; started the turn towards the wash rack. We knew from many past experiences that it is very close quarters with another -700 aircraft parked in front of the hangar. Mr X swung the turn wide to provide extra clearance for the wingtip-to-wingtip parking arrangement. As we were slowing down approaching the parking spot; the left winglet struck the right elevator and horizontal stabilizer of aircraft Y. We stopped the aircraft immediately after the impact. We found that -200 aircraft was parked on the -300 parking line and not the -700 line. This is definitely a contributing factor. In the past; we have moved aircraft to the wash rack without incident when they are parked in the correct position. When watching the movement into position; the attention is focused on the wingtip-to-wingtip clearance; not the winglet-to-horizontal stabilizer clearance. I would never have thought that those 2 areas could or would collide.

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Original NASA ASRS Text

Title: A B737-700 BEING TOWED TO THE HANGAR LINE STRUCK AN IMPROPERLY PARKED B737-200 INCURRING DAMAGE TO BOTH ACFT.

Narrative: ON JAN/WED/05 AT APPROX XA00; I WAS RIDING BRAKES ON ACFT X FROM GATE TO THE WASH RACK FOR AN HC1 WASH. WE WERE APCHING THE END OF THE HANGAR ON THE J-LINE. MR X WAS DRIVING THE TUB; STARTED THE TURN TOWARDS THE WASH RACK. WE KNEW FROM MANY PAST EXPERIENCES THAT IT IS VERY CLOSE QUARTERS WITH ANOTHER -700 ACFT PARKED IN FRONT OF THE HANGAR. MR X SWUNG THE TURN WIDE TO PROVIDE EXTRA CLRNC FOR THE WINGTIP-TO-WINGTIP PARKING ARRANGEMENT. AS WE WERE SLOWING DOWN APCHING THE PARKING SPOT; THE L WINGLET STRUCK THE R ELEVATOR AND HORIZ STABILIZER OF ACFT Y. WE STOPPED THE ACFT IMMEDIATELY AFTER THE IMPACT. WE FOUND THAT -200 ACFT WAS PARKED ON THE -300 PARKING LINE AND NOT THE -700 LINE. THIS IS DEFINITELY A CONTRIBUTING FACTOR. IN THE PAST; WE HAVE MOVED ACFT TO THE WASH RACK WITHOUT INCIDENT WHEN THEY ARE PARKED IN THE CORRECT POS. WHEN WATCHING THE MOVEMENT INTO POS; THE ATTN IS FOCUSED ON THE WINGTIP-TO-WINGTIP CLRNC; NOT THE WINGLET-TO-HORIZ STABILIZER CLRNC. I WOULD NEVER HAVE THOUGHT THAT THOSE 2 AREAS COULD OR WOULD COLLIDE.

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.