Questione giuridica chiave
Whether the original 1998 whole disability pension decision was manifestly erroneous and could be reconsidered under Art. 53(2) LPGA.
Decisione estratta
Yes. The original decision was manifestly erroneous because invalid income and incapacity were assessed in a legally unsound way, and correcting it was important.
Motivazione estratta
The insured was not limited to sheltered-work employment; medical reports showed capacity for ordinary adapted work. Fixing invalid income at only CHF 866 without proper comparison made the invalidity rate clearly too high.