Page:United States Statutes at Large Volume 49 Part 2.djvu/1647

CERTIFICATES OF AIR'VORTHINESS-GREAT BRITAIN. equil>ment will be identified by labels attached with lead seals and bearmg the serial number of the aircraft; (ii) details of the per- formance of the aircraft in its official flight test, and particulars of the normal engine speed in flight (with the airscrew fitted to the particular aircraft) and of the normal engine consumption of petrol and oil· (iii) rigging particulars where applicable. (c) A" weight schedule" showing the ascertained tare weight of the particular aircraft with details of all the items that are in- cluded in the tare weight and the individual weights of each of the re- movable items so included; this "weight schedule" or one of tho documents referred to at (a) or (b) above will also contain par- ticulars of the ascertained position of the centre of gravity of tho particUlar type of aircraft m the" tare" condition, and will define the limits between which the centre of gravity may be allowed to move. 5. A validation conferred by the competent United Kingdom authorities in accordance with the terms of this Note will, on ex- piry, be renewed under the conditions laid down for the renewal of United Kingdom certificates. Reference to the United States au- thorities will not be made unless special circumstances require it in any particular case. 6. The competent United Kingdom authorities shall have the right to make the validation of United States certificates dependent on the fulfilment of any special conditions which are for the time being required for the issue of certificates of airworthiness in the United Kingdom. Information with regard to these special conditions will from time to time be communicated to the competent United States authorities. 7. The competent United Kingdom authorities may at any time revise their standard of airworthiness. Any such revised standard may, as in the case of other aircraft, be enforced in respect of air- ,craft whose certificates of airworthiness are validated in accord- ance with the terms of this Note. Facilities will be given as and when necessary for referring the particular problems arising from Bny such revised standard to the authorities responsible for the ap- proval of the original design of the aircraft. 8. The competent United Kingdom authorities shall be free to give special consideration to any type of aircraft which in prac- tice appears to them to be unsafe, and, if they consider it necessary ~ to withhold or suspend validation. · 9. The competent United States authorities shall afford to the competent United Kingdom authorities the fullest opportunity from time to time to satisfy themselves regarding the standards as to ma- terials, structural conditions, inspectionaI methods, etc., laid down and enforced in the United States. 10. The competent United States authorities shall k('{'p the com- petent United Kingdom authorities fully and currently informed of all regulations in force in regard to the airworthiness of civil air- craft and any changes therein that may from time to time be .effected. 3653