Élancer belong to the 1st
group. Élancer is a common french verb.
Élancer is conjugated the same way that verbs that end in : -cer
Élancer is conjugated with auxiliary avoir
Élancer verb is
direct transitive, intransitive.
French verb élancer can be conjugated in the reflexive form: S'élancer
verb is a direct transitive verb, so passive voice can be used.