Kernrechtsfrage
Whether the requirements for revising and abolishing the quarter disability pension were met under Art. 17 ATSG.
Extrahierter Entscheid
No. Since 7 December 2001 there had been no decisive change in the insured person's earning situation; the quarter pension remained payable.
Extrahierte Begründung
The comparison must be made with the situation at the last material decision in 2001, not with the original pension award in 1991. The evidence showed no significant change in the health condition and no legally relevant change in the economic consequences of the same impairment; the higher income reflected no revision-relevant development.