CHICAGO--(BUSINESS WIRE)--Fitch Ratings has affirmed the ratings for Delta Air Lines' pass-through trusts series 2007-1 class A certificates at 'BBB+'. Fitch currently rates Delta (DAL) with an Issuer Default Rating (IDR) of 'BB+'/Positive Outlook. KEY RATING DRIVERS Since Fitch's previous review of this transaction the value of the underlying...
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