Miami-Dade commissioners have authorized issuance up to $400 million in aviation revenue refunding bonds to repay bonds sold to fund prior capital improvements at county airports.

Fitch Ratings gave the bond series an “A” rating and “positive” outlook, citing Miami International Airport’s “new, long-term airline use agreement, which demonstrates the signatory air carrier’s commitment to serving the strong air service area [and] should allow the established track record of enplanement growth and stable financial results to continue.”