Narrative:

After landing on runway 13 the control of the aircraft was xferred from the first officer to the captain. The captain exited the runway at taxiway 'G'. Ground control was contacted by the first officer and a clearance to taxi all the way to the terminal was received. The aircraft proceeded nwbnd via taxiway 'B' all the way to taxiway 'K'. While making a turn at a very normal taxi speed the right main gear went slightly off the taxiway surface and got stuck in the mud due to a slight undershoot during the turn. This situation was aggravated by the very soft texture of the soil due to torrential showers during the previous days in the area. Ground control and company operations were notified and ground support and fire/rescue crews were dispatched west/O delay. Passengers and luggage were deplaned in an orderly manner using the aft stairs of the aircraft and transported to the terminal using a small fleet of vans and trucks. (The cockpit crew stayed with aircraft). Later on a decision was made to xfer fuel from tank #3 to tank #1 in order to lighten up the rh side of the aircraft. Members of the ground crew cleaned up the mud from the forward side of the tires, the landing gear pins were installed as a safety measure, all 3 engines were started after the proper coordination was established between the cockpit crew, the control tower and the fire department. The aircraft was pwred out from the site in a smooth way and taxied to the gate (only forward thrust was required). An inspection was performed overnight and no damage was reported. No injuries or damages resulted from this incident. Supplemental information from acn 168041. Unfortunately, as I turned onto 'K', the right main landing gear slipped off the taxiway into the mud by approximately 2'. Had there been fillets around the intersection of 'B', 'K', this incident probably would not have occurred. Supplemental information from acn 168305. Blue lights around that corner would help, but mainly any time a taxiway turns more than 90 degree which I believe this one did the corner should be filled in with concrete or pavement.

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Original NASA ASRS Text

Title: ACR LGT ON TAXI EXPERIENCES TXWY EXCURSION AND DEVELOPS STICKY SITUATION.

Narrative: AFTER LNDG ON RWY 13 THE CTL OF THE ACFT WAS XFERRED FROM THE F/O TO THE CAPT. THE CAPT EXITED THE RWY AT TXWY 'G'. GND CTL WAS CONTACTED BY THE F/O AND A CLRNC TO TAXI ALL THE WAY TO THE TERMINAL WAS RECEIVED. THE ACFT PROCEEDED NWBND VIA TXWY 'B' ALL THE WAY TO TXWY 'K'. WHILE MAKING A TURN AT A VERY NORMAL TAXI SPD THE R MAIN GEAR WENT SLIGHTLY OFF THE TXWY SURFACE AND GOT STUCK IN THE MUD DUE TO A SLIGHT UNDERSHOOT DURING THE TURN. THIS SITUATION WAS AGGRAVATED BY THE VERY SOFT TEXTURE OF THE SOIL DUE TO TORRENTIAL SHOWERS DURING THE PREVIOUS DAYS IN THE AREA. GND CTL AND COMPANY OPS WERE NOTIFIED AND GND SUPPORT AND FIRE/RESCUE CREWS WERE DISPATCHED W/O DELAY. PAXS AND LUGGAGE WERE DEPLANED IN AN ORDERLY MANNER USING THE AFT STAIRS OF THE ACFT AND TRANSPORTED TO THE TERMINAL USING A SMALL FLEET OF VANS AND TRUCKS. (THE COCKPIT CREW STAYED WITH ACFT). LATER ON A DECISION WAS MADE TO XFER FUEL FROM TANK #3 TO TANK #1 IN ORDER TO LIGHTEN UP THE RH SIDE OF THE ACFT. MEMBERS OF THE GND CREW CLEANED UP THE MUD FROM THE FORWARD SIDE OF THE TIRES, THE LNDG GEAR PINS WERE INSTALLED AS A SAFETY MEASURE, ALL 3 ENGS WERE STARTED AFTER THE PROPER COORD WAS ESTABLISHED BTWN THE COCKPIT CREW, THE CTL TWR AND THE FIRE DEPT. THE ACFT WAS PWRED OUT FROM THE SITE IN A SMOOTH WAY AND TAXIED TO THE GATE (ONLY FORWARD THRUST WAS REQUIRED). AN INSPECTION WAS PERFORMED OVERNIGHT AND NO DAMAGE WAS RPTED. NO INJURIES OR DAMAGES RESULTED FROM THIS INCIDENT. SUPPLEMENTAL INFO FROM ACN 168041. UNFORTUNATELY, AS I TURNED ONTO 'K', THE R MAIN LNDG GEAR SLIPPED OFF THE TXWY INTO THE MUD BY APPROX 2'. HAD THERE BEEN FILLETS AROUND THE INTXN OF 'B', 'K', THIS INCIDENT PROBABLY WOULD NOT HAVE OCCURRED. SUPPLEMENTAL INFO FROM ACN 168305. BLUE LIGHTS AROUND THAT CORNER WOULD HELP, BUT MAINLY ANY TIME A TXWY TURNS MORE THAN 90 DEG WHICH I BELIEVE THIS ONE DID THE CORNER SHOULD BE FILLED IN WITH CONCRETE OR PAVEMENT.

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.