What was found
CORROSION IN INTERNAL STRUCTURE OF FWD WASTE LAVATORY SERVICE PANEL INCLUDING ANGLE IMPACT AT LOWER FUSELAGE (FUS) (SM) (TCI 100-16). CORROSION LEVEL:1 IN INTERNAL STRUCTURE OF FWD WASTE LAVATORY SERVICE PANEL INCLUDING ANGLE IMPACT AT LOWER FUSELAGE WAS REMOVED PER CRJ-900 SRM 51-21-06-001-001-A01 DAMAGE WERE MEASURED WITH THE FOLLOWING DIMENSIONS IN INTERNAL STRUCTURE DIAPHRAGM UPPER: ORIGINAL THICKNESS: 0.080" REMAINING THICKNESS:0.076" MAX DEPTH: 0.004", DIAPHRAGM LOWER: ORIGINAL THICKNESS: 0.080" REMAINING THICKNESS: 0.077" MAX DEPTH: 0.003" AND ANGLE IMPACT: ORIGINAL THICKNESS: 0.050" REMAINING THICKNESS: 0.047" MAX DEPTH: 0.003" THEREFORE IT'S WITHIN LIMITS PER CRJ-900 SRM 53-21-23-101-005-A02 EQUIPMENT USED: DIAL INDICATOR P/N: 543-783 SERIAL:18055681 EXP. DATE: 16-JUL-19 N/C: 2380 RGC.