Originally Posted by
petaluma1
It could mean that you have been determined to not be eligible for PreCheck.
I was thinking the same thing. I only have GE so I'm not sure how it works for PreCheck but as I recall for GE I only got an email saying that the application status had changed. after the interview and I had to log on to see the status. A letter about eligibility does not sound good - hopefully I'm wrong and the OP gets PreCheck.