Question juridique clé
Whether the conditions for a revision-based increase of the half disability pension were met
Solution extraite
No. The claimant's health and earning capacity had not changed in a legally relevant way during the relevant period, so the prerequisites for a pension increase were not fulfilled.
Motifs extraits
The lower court's careful assessment of the medical file was upheld. The new submissions and medical certificate did not show an incomplete or manifestly incorrect factual finding, nor a violation of federal law under the limited review applicable to disability insurance cases.