Trade union registration appeals allowed; late appeals permitted for sufficient reasons, and orders can require issuance or reinstatement of registration. A person aggrieved by refusal to register a trade union or by cancellation of its registration may appeal to the Tribunal within the prescribed period; the Tribunal may allow delayed appeals for sufficient reason or unavoidable circumstances. After hearing the parties, the Tribunal may dismiss the appeal or direct the Registrar to register the trade union and issue a certificate of registration or set aside the cancellation, and must forward a copy of its order to the Registrar.