Kernrechtsfrage
Whether the prior half disability pension could be revoked by revision or reassessment after the 2007 medical report.
Extrahierter Entscheid
No. The medical situation had not materially improved, the economic situation had not changed, and neither revision under Art. 17 ATSG nor reconsideration justified ending the pension.
Extrahierte Begründung
The comparison basis was the 2002 notification, which was equivalent to a final decision. The later report reflected only a different appraisal of essentially unchanged facts, so no revision ground existed.