Key legal question
Whether the half AI pension could be revoked on revision based on the ordinary income-comparison method
Extracted holding
The pension could be revoked because the insured's earning capacity had improved and the invalidity rate no longer reached pension entitlement threshold.
Extracted reasoning
For active insured persons and self-employed persons, invalidity is normally assessed by income comparison. The previous extraordinary method had been incorrectly applied. The income without invalidity was reliably ascertainable from prior salary data and could be indexed; there was no serious reason to depart from the ordinary method.