Narrative:

Before departing from an FBO ramp at mdw, I requested ground personnel to be towed out of the ramp due to the fact that the ramp was congested with other aircraft. I was informed that a tow bar was not available and that I would have plenty of room available to leave the ramp area. They provided me with a marshall and 2 wing walkers. I signaled the marshall when ready to taxi and he signaled me to taxi straight ahead. The ramp was dark, but I could clearly see his lighted wands. As we approached an aircraft that was parked ahead of us, he signaled me to turn to the right. He then signaled to continue straight ahead. At that point, the right landing gear tires went off the ramp and into the mud where it got stuck. Despite everyone's efforts, the airplane remained stuck until the next morning when special equipment was brought over to pull it out. The airport auths faulted the marshall for this mishap. From the beginning I didn't feel very comfortable taxiing out of that ramp, so looking back, I should have waited as long as it took for the FBO to find a tow bar and have them tow me out of the ramp.

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Original NASA ASRS Text

Title: B727 GETS STUCK IN MUD AFTER THE R MAIN WHEEL ROLLS OFF THE RAMP DURING TAXI OUT NIGHT GUIDED BY MARSHALL AND WING WALKERS.

Narrative: BEFORE DEPARTING FROM AN FBO RAMP AT MDW, I REQUESTED GND PERSONNEL TO BE TOWED OUT OF THE RAMP DUE TO THE FACT THAT THE RAMP WAS CONGESTED WITH OTHER ACFT. I WAS INFORMED THAT A TOW BAR WAS NOT AVAILABLE AND THAT I WOULD HAVE PLENTY OF ROOM AVAILABLE TO LEAVE THE RAMP AREA. THEY PROVIDED ME WITH A MARSHALL AND 2 WING WALKERS. I SIGNALED THE MARSHALL WHEN READY TO TAXI AND HE SIGNALED ME TO TAXI STRAIGHT AHEAD. THE RAMP WAS DARK, BUT I COULD CLRLY SEE HIS LIGHTED WANDS. AS WE APCHED AN ACFT THAT WAS PARKED AHEAD OF US, HE SIGNALED ME TO TURN TO THE R. HE THEN SIGNALED TO CONTINUE STRAIGHT AHEAD. AT THAT POINT, THE R LNDG GEAR TIRES WENT OFF THE RAMP AND INTO THE MUD WHERE IT GOT STUCK. DESPITE EVERYONE'S EFFORTS, THE AIRPLANE REMAINED STUCK UNTIL THE NEXT MORNING WHEN SPECIAL EQUIP WAS BROUGHT OVER TO PULL IT OUT. THE ARPT AUTHS FAULTED THE MARSHALL FOR THIS MISHAP. FROM THE BEGINNING I DIDN'T FEEL VERY COMFORTABLE TAXIING OUT OF THAT RAMP, SO LOOKING BACK, I SHOULD HAVE WAITED AS LONG AS IT TOOK FOR THE FBO TO FIND A TOW BAR AND HAVE THEM TOW ME OUT OF THE RAMP.

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.