Apple has Identified an Issue with some logic boards in their 13" 2018 MacBook Air that they'll replace at No Charge
A Sunday report states that Apple has confirmed in an internal document to repair staff that it’s identified an issue with the main logic board in what it says is a "very small number" of MacBook Air models. Apple Stores and authorized repair staff have been informed to replace the main logic board in affected machines at no cost to customers.
The report from 9to5Mac further notes that "Apple’s memo to repair staff notes that it has identified “an issue” with the main logic board specifically in Retina, 13-inch, 2018 MacBook Air models with certain serial numbers. Apple will be emailing customers with machines with the serial numbers they’ve identified as being affected, otherwise customers can take their machine to Apple Stores or authorized repair staff to have their devices checked out."