ION: [ENGINEERING DISPOSITION:] REWORK NOTED CORROSION MLG DOOR IAW SE05252904 (REV C)##IT IS PERM ISSIBLE TO SUBSTITUTE ZINC DUST PRIMER IN LIEU OF BRUSH CAD PLATING. BY STEPHEN ALOIS (TECH SPEC II U309767) ON 22 OCT 2018 12:57 PM ECM STEP: 2 PERFORMED ULTRASONIC THICKNESS MEASUREMENTS PER MAINTENANCE REQUEST AN