Key legal question
Whether the half disability pension could be revised and discontinued under Art. 17 ATSG.
Extracted holding
The pension could not be revised away because the medical reports showed only a different assessment of an essentially unchanged condition, not a relevant change in health or earning capacity.
Extracted reasoning
Art. 17 ATSG requires a material change in the factual circumstances. The later psychiatric expert disagreed with the earlier assessment and diagnostic weight, but did not establish a real deterioration or improvement since the pension award.