54 STAT.] NEW ZEALAND-CERTIFICATES OF AIRWORTHINESS Jae 31940 2277 or (2) with the requirements of said Parts of the Civil Air Regula- tions as revised to May 31, 1938 plus any or all further amendments or revisions thereof, provided that if the competent aeronautical authorities of New Zealand shall have notified the competent aero- nautical authorities of the United States that any such amendments or revisions are not acceptable, or if such further amendments or revisions have not been communicated to the competent aeronautical authorities of New Zealand sixty (60) days prior to the date of ship- ment of the aircraft Unit, compliance with the amendments or revisions in question shall not entitle aircraft Units to be imported under these requirements. 5. Provision shall be made in all aircraft for protection against the effect of static electricity while refuelling. 6. Provision shall be made in all aircraft to prevent accidental or unauthorised operation of air controls and throttles, and to avoid accidental interference with the ignition switches and fuel shut-off valves. 7. The aircraft structure shall be investigated for and comply with the British centre of pressure back (CPB) condition for normal category aircraft. 8. All engines shall be fitted with dual ignition. 9. All ignition switches of the "toggle" type shall be so arranged that ignition is "off" when the knob of the switch is in the downward position. 10. All filler openings in the fuel and oil systems shall be plainly marked with the capacity in imperial gallons and the word "fuel" and "oil" as the case may be. Fuel and oil gauges showing tank contents in gallons shall be calibrated in imperial gallons. 11. All flexible fuel lines forward of the fireproof bulkhead shall be of a fireproof type approved by the competent aeronautical author- ities of the United States. 12. Oil lines carried forward of the fireproof bulkhead shall be provided with fireproof flexible joints of a type approved by the competent aeronautical authorities of the United States. In other parts of the oil system, joints shall be of a flexible type approved by the competent aeronautical authorities of the United States. 13. Valves and cocks in fuel lines shall be so arranged that the effect of vibration and/or gravity shall not cause the valve or cock to move to the "closed" or "off" position. 14. All New Zealand registration marks affixed to the aircraft prior to shipment from the United States shall be affixed in accord- ance with the requirements of the New Zealand Air Navigation Regu- lations, 1933. 15. A carburetor mixture control, if one is installed, shall be so connected to the throttle control that it will automatically return to the proper position for sea level flying when the throttle is closed.
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