What was found
PDX - NR 1 ENGINE LOWER COWL AFT CUTOUT FOR OIL COOLER IS CHAFED AT LEFTHAND FORWARD CORNER. MAPPED DAMAGE FOR ENGINEERING. BLENDED DAMAGE SMOOTH AND DEEPEST POINT AFTER BLENDING ON RIGHT HAND IS .009 INCH AND LEFT HAND IS .020 INCH. HFEC INSPECTION AS PER 1-84-7A, PART 6, 51-00-02. NO CRACKS NOTED. ULTRASONIC THICKNESS CHECK TO FIND ORG THICKNESS, ORG .086 INCH. REPAIRED LOWER COWL AND INSPECTED INLET PLATE. FOUND INLET PLATE TO BE PREVIOUSLY TRIMMED IAW RD 6-71-150 AND HORIZON AIR EA 6-71-150.