N.M. Stat. § 64-4-5
Time of registration; penalty.
A. The owner or lessee of an aircraft, whichever is in possession, shall register the
aircraft prior to March 1 of each year.
B. Any person who purchases, leases or otherwise acquires an aircraft or brings
one into the state after March 1 shall register the aircraft within fifteen days after
purchase, lease, acquisition or entering the state.
C. Any owner or lessee who fails to comply with Subsection A or any person who
fails to comply with Subsection B shall pay a fine equal to ten percent of the regular
registration fee times each month or portion of a month the registration fee is past due.