Standard&Poor's Ratings Services assigned its 'AAA/A-1+ rating to San Francisco City and County Airport Commission, Calif.'s variable-rate revenue bonds, second series, issue 33-A. The long-term component of the rating is based on a bond insurance policy provided by XL Capital Assurance Inc. ('AAA'). The bond insurance policy covers principal and interest on the bonds for regularly scheduled debt service payments. The short-term component of the rating is based on a SBPA provided by Depfa Bank plc ('AA-/A-1+'). The SBPA provides coverage for the purchase price on unremarketed tendered bonds, including up to 36 days' interest at an interest rate of 12% annually. The SBPA is scheduled to terminate on Feb. 15, 2016. The bonds will initially bear interest