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36. The Aircraft Division embraces all those activities related to the operation of aircraft, including flying and engineering. 37. This major division of the functions of aviation administration — the operation and servicing of the aircraft on the one hand and the ground services for aircraft operation on the other —has been proved in practice ; the Ministry of Civil Aviation is in course of re-organisation on these lines. We have no hesitation in recommending it as the most efficient. 38. A chart showing the organisation of the Directorate on this plan is attached as Appendix D. Appendix E lists the principal functions of each branch. 39. Each Branch is responsible for an activity of considerable importance, and the function of the head of the Branch is to direct it. The title " Controller " at present used is, we consider, not an apt one. Both because of the status which we recommend should be accorded to the head of the Civil Aviation Directorate and the responsibilities which he should carry, and because of the varied activities which are directed by separate branches under his control, we recommend that the head of the Civil Aviation Directorate should "be designated Director General. Each head of the two Divisions should be designated Deputy Director General, while the head of each Branch should be designated Director. We do not think it necessary to go further in designating the appropriate division of Branches into sections. Such division will be necessary to a greater or lesser extent in each Branch, and normally the sections will be headed by Deputy Directors. The more detailed division of the Branches leaves room for some variation without affecting the main structure, and it can be done more efficiently with closer reference to existing conditions in New Zealand than is possible in the time available to us. 40. While Appendix E sets out the duties of each of the Branches, it is desirable to make reference here to some of special importance which require some explanation. These are dealt with in paragraphs 41 to 47. 41. The direction of Air Traffic Control, with which is associated Search and Rescue, is allocated to the Director of Air Routes and Aerodromes. There should then be a Deputy Director in charge of Air Traffic Control, but an acceptable alternative would be to constitute Air Traffic Control as a separate branch. In any case the necessity of an Air Routes and Aerodromes Branch to provide co-ordinated development and management of all aerodromes, Government or otherwise, is well proven. It is a function of the Civil Aviation organisation which can only be directed by officers with air experience. Only fortuitously can the Ministry of Works provide officers with the right experience. The function of the Civil Engineer is to co-ordinate air requirements with the engineering services.