Free balloon shall not be operated within classes B, C, D airspace and class E surface airspace except under conditions prescribed by the CAA.An unmanned free balloon shall be operated in such a manner as to minimize hazards to persons, property or other aircraft and in accordance with the conditions specified in Appendix 1.APPENDIX 1. UNMANNED FREE BALLOONS.PDFAPPENDIX 1. UNMANNED FREE BALLOONS.doc