every calendar year you have to keep hitting it to keep it

status with the miles&more-program (LH, OS, Lauda, LOT), which earns miles when flying all StarAlliance-carriers, is valid for two calendar years (plus Jan/Feb). Example: you achieve Senator status with miles&more in 2003 (you need 100'000 status miles in a calendar year for that), than your Senator status expires feb-2006 (if you don't requalify with another 100'000 status miles in either 2004 or 2005; you only have to requalify in one of these two years); but even then you are only downgraded 'one level' and you will maintain the second highest level ('Frequent Flier') for another two years = until feb-2008 (eight).