AIB is applying the finding to other customers in the same cohort.
The Ombudsman insists that only he can publish the decision.
But this is a summary of what he found.
AIB did breach the contract and should have offered a tracker mortgage to Karen.
AIB was wrong to say what the rate would have been - their report could, at best, conclude what it should have been.
He could not decide what the rate would have been either.
He felt that, under the circumstances, it would be unfair to AIB to give Karen a tracker for the remainder of her mortgage.
As a fair balance, he ordered AIB to write down the balance of Karen's mortgage by 12% of the balance on the day she rolled off the fixed rate and should have been offered a tracker in 2010.
And to pay her, into her nominated account, the interest charged on that write off since 2010. That amounted to roughly a further 4% of the balance as of October 2010.