...NEW YORK (S&P Global Ratings) Sept. 20, 2017--S&P Global Ratings today assigned its '### (sf)' issue-level rating to American Airlines Inc.'s series 2016-3 class B pass-through certificates (with an expected maturity date of Oct. 15, 2025). The final legal maturity will be 18 months after the expected maturity. American Airlines is issuing the certificates under a Rule 415 shelf registration. We base our ratings on these issues on the credit quality of American Airlines' parent, American Airlines Group Inc. (##-/Stable/--), the substantial collateral coverage by good-quality aircraft, and the legal and structural protections available to the certificates. The company will use the proceeds from the offering, in addition to the proceeds already received from the 2016-3 class ## and class A certificates issued on Sept. 19, 2016, to finance or refinance five Airbus A321-200 aircraft, eight Boeing B737-800 aircraft, four Boeing B787-9 aircraft, and eight Embraer ERJ175LR aircraft. The secured...