Provided that
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(i) an applicant who has at any time qualified as a pilot of balloons or airships in any of Her Majesty's air forces may, at the discretion of the Director and according to the applicant's qualifications and experience, be exempted from all or any of the above practical flying tests and from the technical examination, except as regards the examination subjects specified at (c) and (d) in this paragraph; and
(ii) a certificate issued by any body approved for the purpose may be accepted in lieu of the passing of the above examination if the Director is satisfied that the qualifications required for the issue of such certificate were at least equivalent to the passing of such examina- tion.
Flying Experience for Renewal of Licence.
134. An applicant for the renewal of a licence shall be required to produce satisfactory evidence that he has had reasonable flying experience as a pilot of balloons during the two years immediately preceding the date of the application. In default of such evidence he may be required to undergo all or any part of the practical dying tests and technical examination specified for the grant of a licence, as the Director may consider appropriate in the circum- stances of the case.
Commercial Pitor's Licence (BALLOONS).
Age of Applicant and Period of Licence.
136. (1) An applicant for the grant of a commercial pilot's licence (balloons) must be not less than 19 years of age.
(2) The period for which a licence may remain in force follow- ing either the grant or any renewal thereof shall not exceed two years.
Aircraft Rating.
136. A licence shall include an aircraft rating specifying the types of balloons which, subject to regulation 137, the holder is entitled to fly.
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Privileges attacking to Licence.
137. The licence shall entitle the holder to fly as pilot of any type of free balloon, and, subject to the requirements of Article 38 of the Order, any type of captive balloon specified in the aircraft rating included in the licence.
Technical requirements for Grant of Licence.
Flying Experience.
138. The applicant shall be required to produce satisfactory evidence-
(a) that he has had reasonable flying experience as a pilot in charge of balloons during the twelve months immediately preceding the date of the application; and
(b) that he has completed ten Rights as pilot in charge of a balloon, each of which flights must have been of at least two hours' duration.
Practical Flying Tests.
139. The applicant shall, subject to the provisions of regula- tion 142, be required to carry out the practical flying tests specified in regulation 132 for the grant of a private pilot's licence (balloons):
Provided that a person who is the holder of such a licence may, at the discretion of the: Director, be exempted from this requirement.
Technical Examination.
140. The applicant shall, subject to the provisions of regulation 142, be required to undergo an examination as to his knowledge of the following subjects-
(d) aerostatics;
(b) physical and chemical properties of light gases and of
materials used in the construction of balloons;
(c) elementary navigation; use of compass; location of
position;