Key legal question
Whether the disability pension was validly revised and terminated retroactively as of 1 January 2007.
Extracted holding
Yes. The insured person's earning situation had materially improved, constituting a revision ground under Art. 17 ATSG.
Extracted reasoning
The medical situation had not changed materially, but the insured's actual post-2006 income showed a substantial increase in invalid income compared with the basis of the original pension award.