Key legal question
Whether a material ground for revising the disability pension existed after the claimant's status changed from part-time to full-time employment
Extracted holding
Yes. The status change allowed a full reassessment under Article 17 ATSG, and the court did not need to decide whether health had improved.
Extracted reasoning
The relevant comparison point was the 2003 pension decision, not the later 2006 notification. The switch to full-time status justified an all-around review of entitlement in the revision proceedings.