(b) Each supervisor must—
(1) If employed by a repair station located inside the United States, be certificated under part 65.
(2) If employed by a repair station located outside the United States—
(i) Have a minimum of 18 months of practical experience in the work being performed; or
(ii) Be trained in or thoroughly familiar with the methods, techniques, practices, aids, equipment, and tools used to perform the maintenance, preventive maintenance, or alterations.
(c) A certificated repair station must ensure its supervisors understand, read, and write English.