Inspections are covered under 91.409 but in this case experimentals are excluded so 43.17 would appear to cover the conditional, at least thats my take on it (but I've only had one cup of coffee this morning).
?43.17 Maintenance, preventive maintenance, and alterations performed on U.S. aeronautical products by certain Canadian persons:
(d) Performance requirements. A person authorized in paragraph (c) of this section may perform maintenance (including any inspection required by Sec. 91.409 of this chapter, except an annual inspection), preventive maintenance, and alterations, provided?
91.409 Inspections:
(c) Paragraphs (a) and (b) of this section do not apply to?
(1) An aircraft that carries a special flight permit, a current experimental certificate, or a light-sport or provisional airworthiness certificate;