Section 142, The Customs Regu- Citation

All stores shall be produced to the proper officer before P;o~uctionbeing put on board an aircraft or ship and upon being put ~elo~;es on board (except in the case of ships of war) shall not be taken shipment. into use without the express permission of the proper officer until the aircraft or ship has left Sierra Leone: Provided that duty-paid stores on which no drawback is claimed and stores not subject to import duty may be taken into immediate use.