AN ACR MLG TAXIED INTO A TUG WHILE PARKING.

Narrative

WX AT THE TIME WAS OVCST CEILING ABOUT 1000 FT WITH VISIBILITY 2-3 MI AND SNOW/BLOWING SNOW. WE WERE MAKING A R HAND TURN WITH A MARSHALLER USING LIGHTED WANDS. A LARGE PUSH TUG WAS PARKED AGAINST THE JETWAY STANCHION. THE TUG APPEARED TO BE FAR ENOUGH FORWARD TO NOT BE A PROB FOR PARKING. SINCE THE INBOARD WING AREA AND ENG IS NOT VISIBLE FROM THE COCKPIT; WE CONTINUED FORWARD FOLLOWING THE MARSHALLER'S SIGNALS. ABOUT 2 FT SHORT OF THE FINAL DESIRED PARKING SPACE; AND AT A VERY SLOW SPD; THE ACFT QUIT MOVING FORWARD. THE MARSHALLER CONTINUED TO SIGNAL A COME FORWARD SIGNAL; BUT THE ACFT WOULD NOT MOVE. THE CAPT AND I COMMENTED THAT WE WERE EITHER IN A RUT OR SOMEONE HAD INSTALLED A WHEEL CHOCK. THE MARSHALLER SIGNALED AN ENG SHUTDOWN AND ON POST-FLT INSPECTION; MAINT DISCOVERED THAT THE ACFT #1 L LOWER ENG COWLING HAD IMPACTED THE PARKED TUG; RESULTING IN THE COWLING BEING SLIGHTLY BENT INWARD AND A HOLE BEING MADE ABOUT 6 INCHES IN DIAMETER IN THE SAME LOCATION. MAINT AND ENGINEERING INSTALLED A TEMPORARY REPAIR AND THE ACFT WAS FERRIED BY US TO KMSP FOR FURTHER MAINT. NO PROBS OCCURRED ON THE FERRY FLT HOME (KMSP). SUPPLEMENTAL INFO FROM ACN 235106: RAMP WAS COVERED WITH SNOW AND OBSCURED CLR ZONE AREA. 2 CONES WERE IMPROPERLY POSITIONED; THEY WERE PLACED TOO FAR OUT INTO PARKING AREA. THIS MADE THE POS OF THE TUG APPEAR TO BE CLR OF PARKING AREA. 1 FT SHORT OF THE NORMAL PARKING AREA; CONTACT WAS MADE WITH THE PARKED TUG.