Step 1:
Go to the Tramites Digitales portal at tramites.extranjeria.gob.cl with your ClaveÚnica or by logging in with your account. (If you still have not registered, check the following article: ¿Como crear una cuenta en el Servicio Nacional de Migraciones?)

Then you must select "Solicitud Prórroga Tarjeta de Tripulante" and click on "Iniciar".

Step 2:

Read all the information and conditions. If you agree, click on "Siguiente".

Step 3:
You must enter the information of the company and its legal representative.

Step 4:
You must enter the information of the means of transportation and upload the role or crew list or general declaration.
Then click on "Siguiente".

Step 5:
Fill out the form with all the corresponding information of the crew member.
Remember that the information must be the same as that on the identification document.

Step 6:
You must upload all required documents, they must be legible and valid.
You must also enter the deadline of the requested permit.
Then you must click "Siguiente".

Step 7:
You must confirm and submit the application by clicking on "Siguiente".
Then select the payment method that best suits you.
You will receive a resolution and payment confirmation on your email.