No. The certificate does not expire. Completion of the appropriate online ALC training course renews the pilot’s recency of aeronautical knowledge for 24 calendar months. You must be able to show a copy of your certificate of completion as proof of currency. 

Your certificate is permanent unless revoked by the Administrator. After completing the initial knowledge test, you must update your recency of aeronautical knowledge within 24 calendar months to maintain currency.  To update your recency of aeronautical knowledge, complete the appropriate online ALC training course.

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