(1) A manufacturer of aircraft manufactured within Australian territory is eligible to apply for an experimental certificate for an aircraft that is to be used for a purpose mentioned in paragraph 21.191(f).
(2) A manufacturer of aircraft engines who has altered a type certificated aircraft by installing different engines, manufactured by the manufacturer within Australian territory, is eligible to apply for an experimental certificate for a purpose mentioned in paragraph 21.191(f) if the basic aircraft, before alteration, was type certificated in the normal, acrobatic, commuter, primary, intermediate or transport category.
(3) A person who has altered the design of a type certificated aircraft is eligible to apply for an experimental certificate for the altered aircraft to be used for a purpose mentioned in paragraph 21.191(f) if the basic aircraft, before alteration, was type certificated in the normal, utility, acrobatic, primary, intermediate or transport category.
(4) An applicant for an experimental certificate for a purpose mentioned in paragraph 21.191(f) is entitled to the certificate if, in addition to meeting the requirements of regulation 21.193:
(a) the applicant has established an inspection and maintenance program for the continued airworthiness of the aircraft; and
(b) the aircraft has been flown for at least 50 hours, or for at least 5 hours if it is a type certificated aircraft which has been modified.
Source FARs section 21.195 modified.