clacko, if you are wondering if your Aviator miles have expired the likely answer is NO. If you are asking will they never expire in the future the answer again is NO. As you are aware unused Aviator miles will get transferred to the Aadvantage program. Once the miles are transferred to the Aadvantage program, they have an expiration of 3 years. As long as there is some activity (including redemptions, partners, etc.) within 3 years the expiration date for ALL the miles in your account extends by another 3 years.