I was curious as to the model number. Is yours a 2010/2011 MacBook Air?
This is only for the SSDs in the 2012 MacBook Air:
> Apple has determined that certain 64GB and 128GB flash storage drives used in the previous generation of MacBook Air systems may fail. These systems were sold between June 2012 through June 2013.
Now where do I find a useful list of which models are actually broken?