Thanks for your message, Flight Detective. May I ask how you access this information when AerClub hasn't informed members accordingly? The central point is that it is a breach of trust: for members to purchase flights according to a published and advertised set of rules and for those tier credits to then be rendered useless. If I purchase one more unneeded flight as you suggest, what grounds have I for trusting that that will make a difference? AerClub is completely absent in this discussion and is the bureaucracy making these decisions.