Narrative:

While acting as first officer on a flight from mdw to pie, on oct/wed/96, we experienced a taxi incident that rendered the aircraft incapable of further movement. After completion of landing rollout on runway 17L, we confirmed with tower that taxiway G was authority/authorized for use, and exited the runway at that point. After radio contact with ground control, we completed the after landing checklist. The taxi proceeded at a slow pace, and a slow r-hand turn was initiated by the captain onto taxiway a. After ensuring that taxiway a centerline had passed behind the third window on the right, the turn was initiated. Shortly thereafter, we felt a sinking sensation and a gradual stop. We realized that the right main landing gear had left the pavement onto an unprepared surface. Contributing factors/suggestions: no painted taxi line for right turns from taxiway G to taxiway a. Needs to be addressed at pie airport. Wider turning pad from taxiway G to taxiway a turning right due to approximately 120 degree turn. Callback conversation with reporter revealed the following information: the reporter said that the ramp had an FBO operation in this area with numerous light aircraft parked near the txwys and this was a factor in the flight crew attempting to turn close to the edge of the hard surface. There was also a ground service 'stair' truck parked next to the taxiway near intersection, he said. After the right main sank into the mud the maintenance personnel put straps around both main gear struts and towed the aircraft out. They changed the right main tires and brakes and test flew the aircraft and returned it to the line. The reporter recommended that the line of aircraft nearest to the taxiway be moved, a taxiway centerline be painted on taxiway a, and the intersection where taxiway G joins taxiway a be rounded by surfacing the inside of that sharp turn.

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Original NASA ASRS Text

Title: AN ACR FLC HAS THE R MAIN GO OFF OF THE HARD SURFACE AND SINK INTO THE MUD AT THE INTXN OF TXWYS G AND A AT PIE. THE ACFT WAS TOWED OUT AND THE R MAIN TIRES AND BRAKES WERE LATER CHANGED AND THE ACFT RETURNED TO SVC. B757-200.

Narrative: WHILE ACTING AS FO ON A FLT FROM MDW TO PIE, ON OCT/WED/96, WE EXPERIENCED A TAXI INCIDENT THAT RENDERED THE ACFT INCAPABLE OF FURTHER MOVEMENT. AFTER COMPLETION OF LNDG ROLLOUT ON RWY 17L, WE CONFIRMED WITH TWR THAT TXWY G WAS AUTH FOR USE, AND EXITED THE RWY AT THAT POINT. AFTER RADIO CONTACT WITH GND CTL, WE COMPLETED THE AFTER LNDG CHKLIST. THE TAXI PROCEEDED AT A SLOW PACE, AND A SLOW R-HAND TURN WAS INITIATED BY THE CAPT ONTO TXWY A. AFTER ENSURING THAT TXWY A CTRLINE HAD PASSED BEHIND THE THIRD WINDOW ON THE R, THE TURN WAS INITIATED. SHORTLY THEREAFTER, WE FELT A SINKING SENSATION AND A GRADUAL STOP. WE REALIZED THAT THE R MAIN LNDG GEAR HAD LEFT THE PAVEMENT ONTO AN UNPREPARED SURFACE. CONTRIBUTING FACTORS/SUGGESTIONS: NO PAINTED TAXI LINE FOR R TURNS FROM TXWY G TO TXWY A. NEEDS TO BE ADDRESSED AT PIE ARPT. WIDER TURNING PAD FROM TXWY G TO TXWY A TURNING R DUE TO APPROX 120 DEG TURN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR SAID THAT THE RAMP HAD AN FBO OP IN THIS AREA WITH NUMEROUS LIGHT ACFT PARKED NEAR THE TXWYS AND THIS WAS A FACTOR IN THE FLC ATTEMPTING TO TURN CLOSE TO THE EDGE OF THE HARD SURFACE. THERE WAS ALSO A GND SVC 'STAIR' TRUCK PARKED NEXT TO THE TXWY NEAR INTXN, HE SAID. AFTER THE R MAIN SANK INTO THE MUD THE MAINT PERSONNEL PUT STRAPS AROUND BOTH MAIN GEAR STRUTS AND TOWED THE ACFT OUT. THEY CHANGED THE R MAIN TIRES AND BRAKES AND TEST FLEW THE ACFT AND RETURNED IT TO THE LINE. THE RPTR RECOMMENDED THAT THE LINE OF ACFT NEAREST TO THE TXWY BE MOVED, A TXWY CTRLINE BE PAINTED ON TXWY A, AND THE INTXN WHERE TXWY G JOINS TXWY A BE ROUNDED BY SURFACING THE INSIDE OF THAT SHARP TURN.

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.