NEW YORK (Standard&Poor's CreditWire) Feb. 27, 2001--Standard&Poor's today lowered its ratings on 28 Commerzbank AG credit liquidity facility-backed municipal issues. This action follows the Feb. 14, 2001, downgrade of Commerzbank AG's ratings to single-'A'-plus/'A-1' from double-'A'-minus/'A-1'-plus, Standard&Poor's said. – CreditWire COMMERZBANK AG CREDIT LIQUIDITY FACILITY-BACKED MUNICIPAL ISSUES Issuer/Issue Amt ($mil) Rtg To From Charlotte, NC Variable-rate airport refunding revenue bonds series 1993A 107.900 AAA/A-1 AAA/A-1+ Chicago, IL Second lien revenue bonds (Chicago Midway Airport) 85.500 AAA/A-1 AAA/A-1+ Connecticut Second lien special tax obligation variable-rate demand bonds series 228.000 A+/A-1 AA-/A-1+ Lancaster Hospital Authority No. 1, PA Hospital revenue refunding bonds (Bryan Memorial Hospital project) series 1996 35.750 AAA/A-1 AAA/A-1+ Los Angeles Unified School District,