62 STAT.] MULTILATERAL-UNIVERSAL POSTAL UNION-JULY 5, 1947 3403 3. If occasion arises, account is taken of the indications of routing Routing. placed on surcharged air-mail articles by the senders, provided the routing asked for is normally utilized for the transportation of mails on the stretch concerned, and that dispatch by such route does not result in considerable delay in the arrival of the articles at destination. 4. Closed air-mail dispatches shall be sent by the route requested by the Administration of the country of origin, provided that such route is utilized by the Administration of the transit country for the transmission of its own dispatches. 5. In order to establish the most suitable route, the office of origin may send to the office of destination of the dispatch a trial bulletin in accordance with Form AV 1 hereto appended; the bulletin must be included in the dispatch and attached to the letter bill. The trial bulletin, duly filled out, shall be returned to the office of origin by the first available air mail. 6. When, as the result of an accident occurring en route, a plane Accidents. can not continue its trip and deliver the mail at the stops scheduled, the personnel on board shall deliver the dispatches to the post office nearest to the place of the accident or the one best qualified to refor- ward the mails. If the personnel is prevented from doing this, the post office concerned, after being informed of the accident, shall make every possible effort without delay to take delivery of the mail. The dispatches must be forwarded to the offices of destination by the most rapid means after determining the condition of the correspondence and reconditioning it if damaged. 7. The circumstances of the accident and the facts determined shall be reported by bulletin of verification to the offices of destination of the dispatches involved; a copy of the bulletin shall be sent to the office of origin of the dispatches. In addition, the Administration of the country to which the air line belongs shall advise the Administra- tions concerned by telegram of all the particulars of the disposal of the mail. ARTICLE 4. Air transportationover part of the route only. 1. Unless practical difficulties would result therefrom, the sender may request that his surcharged correspondence be dispatched by air over only a part of the route. 2. When he exercises this option, the sender shall indicate on his surcharged correspondence in the language of the country of origin and in French: "Par avion de -------- d -_ ____ _.. " (By air mail from --------- to ------ _-.). At the end of the air transmission, the "Par Avion" labels mentioned in Article 24 hereafter, as well as Po, p.3412. the special notations, shall be crossed out by means of two heavy transverse lines. ARTICLE 5. Rates and general conditions for acceptance of air-mail correspondence. 1. Surcharged air-mail articles are liable, in addition to the regular Aerial surcharges. postage rates, to a special surcharge for air transportation, the amount
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