Question juridique clé
Whether the Federal Administrative Court correctly refused to hear the appeal as time-barred.
Solution extraite
Yes. The appeal deadline is mandatory and non-extendable; no valid ground for reinstatement was shown, so non-entry was required.
Motifs extraits
A missed statutory appeal period generally causes loss of the right to appeal. Only narrowly defined exceptions apply, such as a granted extension for defects or reinstatement for a lawful excuse. There was no room for fairness-based exceptions or claims of excessive formalism.