Key legal question
Which regulation applies to the calculation of a widow’s pension: the rule in force at the insured person’s death or a later rule?
Extracted holding
The applicable regulation is the one in force on the day of the insured person’s death, when the beneficiary’s entitlement arises.
Extracted reasoning
The right to survivor benefits arises at the insured person’s death; the pension calculation must therefore be governed by the regulatory framework then in force.