What was found
AFT PIT LEFT TRANSITION PANEL UPPER AND LOWER SURFACE HAS CORROSION NUMEROUS PLACE BETWEEN BS727J+13 AND BS727+4 AS MARKS. GROUNDED - YES. BLENDED AWAY CORROSION, ORIGINAL THICKNESS .040, MAT LOSS AT GREATEST .017, NEW THICKNESS AT LOWEST .023. AREAS OUT OF LIMITS PER B737-MAX9 SRM 53-00-53-1A-2. ACCOMPLISHED REPAIR PER B737-MAX9 SRM 53-00-53-2R-5, SRM 51-40-02 AND BDWG 146A7500.