Narrative:

We were cleared to the terminal area via taxiway F. My taxi speed was slow and deliberate. After crossing runway 3C/21C, a slight adjustment to the right was required to stay centered on the taxiway. Use of up to full nose gear steering did not alter aircraft direction. Use of up to full brake pedal pressure did not slow or stop aircraft. The aircraft was stopped by the left main gear leaving the paved surface and immediately coming to rest at a point just east of taxiway X. Taxiway F, between runway 3C/21C and taxiway X was extremely slippery with braking action nil at this point. When I telephoned back to the flight attendants to verify that no one was injured, they indicated that no one was aware that the left landing gear was off the taxiway. No one was hurt in any way. Supplemental information from acn 226087: the aircraft became uncontrollable on a sheet of clear ice. Aircraft would not respond to turn inputs or braking efforts. There was no aircraft damage. Our runway was adequately sanded and/or deiced, the taxiway was not. I put the blame for this entirely on the detroit metropolitan airport authority and/or wayne county for failure to maintain safe taxiway conditions. Poor lighting/night conditions were also definitely a factor.

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Original NASA ASRS Text

Title: AN MLG HAD A LITTLE EXCURSION WITH ICE ON A TAXIWAY AT DTW. THE RWY HAD BEEN PROPERLY PREPARED FOR TFC, BUT NOT ALL TAXIWAY.

Narrative: WE WERE CLRED TO THE TERMINAL AREA VIA TAXIWAY F. MY TAXI SPD WAS SLOW AND DELIBERATE. AFTER XING RWY 3C/21C, A SLIGHT ADJUSTMENT TO THE R WAS REQUIRED TO STAY CTRED ON THE TAXIWAY. USE OF UP TO FULL NOSE GEAR STEERING DID NOT ALTER ACFT DIRECTION. USE OF UP TO FULL BRAKE PEDAL PRESSURE DID NOT SLOW OR STOP ACFT. THE ACFT WAS STOPPED BY THE L MAIN GEAR LEAVING THE PAVED SURFACE AND IMMEDIATELY COMING TO REST AT A POINT JUST E OF TAXIWAY X. TAXIWAY F, BTWN RWY 3C/21C AND TAXIWAY X WAS EXTREMELY SLIPPERY WITH BRAKING ACTION NIL AT THIS POINT. WHEN I TELEPHONED BACK TO THE FLT ATTENDANTS TO VERIFY THAT NO ONE WAS INJURED, THEY INDICATED THAT NO ONE WAS AWARE THAT THE L LNDG GEAR WAS OFF THE TAXIWAY. NO ONE WAS HURT IN ANY WAY. SUPPLEMENTAL INFO FROM ACN 226087: THE ACFT BECAME UNCTLABLE ON A SHEET OF CLR ICE. ACFT WOULD NOT RESPOND TO TURN INPUTS OR BRAKING EFFORTS. THERE WAS NO ACFT DAMAGE. OUR RWY WAS ADEQUATELY SANDED AND/OR DEICED, THE TAXIWAY WAS NOT. I PUT THE BLAME FOR THIS ENTIRELY ON THE DETROIT METRO ARPT AUTHORITY AND/OR WAYNE COUNTY FOR FAILURE TO MAINTAIN SAFE TAXIWAY CONDITIONS. POOR LIGHTING/NIGHT CONDITIONS WERE ALSO DEFINITELY A FACTOR.

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.