48-02-04 DOUGLAS: Applies to DC-6 Serial Numbers 42854 Through 42880; 42882 Through 42896; 43000 Through 43017; 43035 Through 43038; 43055; 43056; 43062, and 43063. \n\nCompliance required by the next No. 3 inspection. \n\nTo prevent the brake lining from becoming wedged between brake disc and housing, replace the present adjustment pin Goodyear P/N 511940-1 and spring plate Goodyear P/N 512139 by the single piece adjusting pin Goodyear P/N 9510744. \n\n(Douglas Service Bulletin DC-6 No. 90 covers this same subject.)