Narrative:

Cleared to taxi to runway 33 by addison ground control. I observed another small aircraft entering taxiway a from a runway exit ramp and beginning to approach my aircraft head-on. Knowing that passage of aircraft along this taxiway is routine at addison, I guided my aircraft as far to the right side of the taxiway as possible without going off the edge of the pavement. As our aircraft approached, I visually doublechked that I had no more room on the right side of the taxiway to utilize in providing spacing. In preparation for the actual passing, I further slowed my aircraft. As the 2 aircraft moved past one another (both were in motion), the left wingtips collided. Upon contact with ground control (confirmation of the collision), I received clearance to taxi back to FBO. Upon arrival back at my point of origin, I contacted the tower as previously instructed by ground control. Recommendation: ground control should not be allowed to grant taxi clrncs to similar aircraft (2 high wings or 2 low wings) which intend to pass going in opposite directions. This practice is not essential to operations and increases the risk of collisions. I don't blame ground control, but this is the only way to guarantee uniformly safe taxi operations by all pilots. Obviously, I wasn't able to 'trust the other guy.' even if I had completely stopped my aircraft, it wouldn't have prevented this accident (although it would have exonerated me of all responsibility).

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Original NASA ASRS Text

Title: 2 SMAS TOUCHED WINGTIPS WHILE TRYING TO PASS WHILE TAXIING.

Narrative: CLRED TO TAXI TO RWY 33 BY ADDISON GND CTL. I OBSERVED ANOTHER SMA ENTERING TAXIWAY A FROM A RWY EXIT RAMP AND BEGINNING TO APCH MY ACFT HEAD-ON. KNOWING THAT PASSAGE OF ACFT ALONG THIS TAXIWAY IS ROUTINE AT ADDISON, I GUIDED MY ACFT AS FAR TO THE R SIDE OF THE TAXIWAY AS POSSIBLE WITHOUT GOING OFF THE EDGE OF THE PAVEMENT. AS OUR ACFT APCHED, I VISUALLY DOUBLECHKED THAT I HAD NO MORE ROOM ON THE R SIDE OF THE TAXIWAY TO UTILIZE IN PROVIDING SPACING. IN PREPARATION FOR THE ACTUAL PASSING, I FURTHER SLOWED MY ACFT. AS THE 2 ACFT MOVED PAST ONE ANOTHER (BOTH WERE IN MOTION), THE L WINGTIPS COLLIDED. UPON CONTACT WITH GND CTL (CONFIRMATION OF THE COLLISION), I RECEIVED CLRNC TO TAXI BACK TO FBO. UPON ARR BACK AT MY POINT OF ORIGIN, I CONTACTED THE TWR AS PREVIOUSLY INSTRUCTED BY GND CTL. RECOMMENDATION: GND CTL SHOULD NOT BE ALLOWED TO GRANT TAXI CLRNCS TO SIMILAR ACFT (2 HIGH WINGS OR 2 LOW WINGS) WHICH INTEND TO PASS GOING IN OPPOSITE DIRECTIONS. THIS PRACTICE IS NOT ESSENTIAL TO OPS AND INCREASES THE RISK OF COLLISIONS. I DON'T BLAME GND CTL, BUT THIS IS THE ONLY WAY TO GUARANTEE UNIFORMLY SAFE TAXI OPS BY ALL PLTS. OBVIOUSLY, I WASN'T ABLE TO 'TRUST THE OTHER GUY.' EVEN IF I HAD COMPLETELY STOPPED MY ACFT, IT WOULDN'T HAVE PREVENTED THIS ACCIDENT (ALTHOUGH IT WOULD HAVE EXONERATED ME OF ALL RESPONSIBILITY).

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.