NEW YORK (Standard&Poor's) March 4, 2015--Standard&Poor's Ratings Services today assigned its 'B+' issue-level rating to United Airlines Inc.'s (B+/Positive/--) City of Houston, Texas Airport System Special Facility Revenue Bonds, series 2015. The bonds are in three series: 2015B-1, B-2, and C. The company will use the first of these to finance new United terminal facilities at Houston Intercontinental Airport, while the second and third series will redeem and refinance airport revenue bonds issued in 1997 and 1998 to build airport facilities for Continental Airlines Inc. (which merged into United's parent company to form United Continental Holdings Inc. in 2010, and which we also rate 'B+'). As is the case for other airport revenue bonds, the issuer