"BT" wrote
explain that one further please? what does experimental have to do
with it? In the USA

FAR 61.31
(k) Exceptions.

(1) This section does not require a category and class rating for aircraft
not type-certificated as airplanes, rotorcraft, gliders, lighter-than-air
aircraft, powered-lifts, powered parachutes, or weight-shift-control
aircraft.

(2) The rating limitations of this section do not apply to—

(i) An applicant when taking a practical test given by an examiner;

(ii) The holder of a student pilot certificate;

(iii) The holder of a pilot certificate when operating an aircraft under
the authority of—

(A) A provisional type certificate; or

(B) An experimental certificate, unless the operation involves carrying a
passenger;

Bob Moore