Narrative:

We landed and taxied clear of the active runway 18/36 in jackson hole, wy. Tower informed us to monitor ground, and taxi to the ramp. As we proceeded towards the FBO I spotted 2 rampers waving their arms and motioning me to come to them. I stopped the aircraft briefly and commented to my first officer. The parking spot looked tight. It was questionable, yet both marshallers ahead of me were giving me the forward and all-clear thumbs ups signal. I began rolling forward slowly aligning myself with the center of the distance between the nose of a B757 on the left, and the tail of a westwind on the right. As I approached closer to the left aircraft I stopped again, told my first officer, this would be close and asked him how we looked on the right. My first officer informed me it would be close and that both marshallers (one at 12 O'clock position, one at 10 O'clock position) were giving us the forward and thumbs up sign. I again started to roll slowly and glanced forward at the marshallers, both continued with the forward signal. As the left wing passed in front of the left aircraft, the first officer yelled stop. As I immediately stopped, I asked what happened. The first officer informed me we just hit the right wing. I secured the aircraft and shut down both engines. We exited the aircraft as the local deputy sheriff and FBO mechanics were approaching. The marshallers went inside the FBO. The right winglet was under the horizontal stabilizer of the westwind a forward distance of approximately 10 inches. Damage to the westwind was minor, no skin puncture was confirmed once the aircraft were separated. Damage to the king air 350 was minimal, scratching the top surface of the winglet. Contributing factors were the tight taxi area, my decision to trust the marshallers, and the snow covered ramp. It was apparent the aircraft slid forward a few inches upon brake application. I learned to stick with my judgement, not rampers.

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Original NASA ASRS Text

Title: A B350 CREW, WHILE BEING MARSHALLED TO A PARKING SPOT AT JAC, MADE CONTACT WITH AN ADJACENT ACFT.

Narrative: WE LANDED AND TAXIED CLR OF THE ACTIVE RWY 18/36 IN JACKSON HOLE, WY. TWR INFORMED US TO MONITOR GND, AND TAXI TO THE RAMP. AS WE PROCEEDED TOWARDS THE FBO I SPOTTED 2 RAMPERS WAVING THEIR ARMS AND MOTIONING ME TO COME TO THEM. I STOPPED THE ACFT BRIEFLY AND COMMENTED TO MY FO. THE PARKING SPOT LOOKED TIGHT. IT WAS QUESTIONABLE, YET BOTH MARSHALLERS AHEAD OF ME WERE GIVING ME THE FORWARD AND ALL-CLR THUMBS UPS SIGNAL. I BEGAN ROLLING FORWARD SLOWLY ALIGNING MYSELF WITH THE CTR OF THE DISTANCE BTWN THE NOSE OF A B757 ON THE L, AND THE TAIL OF A WESTWIND ON THE R. AS I APCHED CLOSER TO THE L ACFT I STOPPED AGAIN, TOLD MY FO, THIS WOULD BE CLOSE AND ASKED HIM HOW WE LOOKED ON THE R. MY FO INFORMED ME IT WOULD BE CLOSE AND THAT BOTH MARSHALLERS (ONE AT 12 O'CLOCK POS, ONE AT 10 O'CLOCK POS) WERE GIVING US THE FORWARD AND THUMBS UP SIGN. I AGAIN STARTED TO ROLL SLOWLY AND GLANCED FORWARD AT THE MARSHALLERS, BOTH CONTINUED WITH THE FORWARD SIGNAL. AS THE L WING PASSED IN FRONT OF THE L ACFT, THE FO YELLED STOP. AS I IMMEDIATELY STOPPED, I ASKED WHAT HAPPENED. THE FO INFORMED ME WE JUST HIT THE R WING. I SECURED THE ACFT AND SHUT DOWN BOTH ENGS. WE EXITED THE ACFT AS THE LCL DEPUTY SHERIFF AND FBO MECHS WERE APCHING. THE MARSHALLERS WENT INSIDE THE FBO. THE R WINGLET WAS UNDER THE HORIZ STABILIZER OF THE WESTWIND A FORWARD DISTANCE OF APPROX 10 INCHES. DAMAGE TO THE WESTWIND WAS MINOR, NO SKIN PUNCTURE WAS CONFIRMED ONCE THE ACFT WERE SEPARATED. DAMAGE TO THE KING AIR 350 WAS MINIMAL, SCRATCHING THE TOP SURFACE OF THE WINGLET. CONTRIBUTING FACTORS WERE THE TIGHT TAXI AREA, MY DECISION TO TRUST THE MARSHALLERS, AND THE SNOW COVERED RAMP. IT WAS APPARENT THE ACFT SLID FORWARD A FEW INCHES UPON BRAKE APPLICATION. I LEARNED TO STICK WITH MY JUDGEMENT, NOT RAMPERS.

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.