47-42-06 DOUGLAS: (Was Mandatory Note 3 of AD-781-1.) Applies to the Following DC-6 Airplanes: AAL Serial Numbers 42854 to 42865, Inclusive; Serial Numbers 42879, 42880 and 42882 to 42891, Inclusive; UAL Serial Numbers 42866 to 42875, Inclusive; and 43000 to 43009, Inclusive; Panagra Numbers 42876 to 42878, Inclusive; NAL Serial Numbers 43055 and 43056; and AAF Number 42881. \n\nTo be accomplished not later than August 1, 1948. \n\nIn the main cabin, Station 890, stencil "Fire Extinguisher" on forward side of bulkhead 12 inches from the floor at the right-hand edge of the lounge door. \n\n(Douglas Service Bulletin DC-6 No. 18 covers this same subject.)