Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
September 1, 2022
Submitted
October 6, 2022
Operation
Air carrier
Aircraft
N952WN
Make and model
Boeing 7377H4
Aircraft serial
36667
Aircraft time
39,061 hours, 23,816 cycles
Part
Sidewall Support
Condition
Corroded
Location
Fwd Cargo Bay
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON FLOOR TO SIDEWALL SUPPORT AT FCB BS500 - BS500D RBL23 . / [01] REMOVED CORROSION ON FLOOR TO SIDEWALL SUPPORT AT CARGO BAY BS 500 -500D LBL23 AT DISCREPANCY AREA BS.500 L=1.700' W=0.800' D=0.020 ORIGINAL THICKNESS 0.040 REMAINING MAT 0.020 MAT LOSS 0.020 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 USED TOOL ID ATS 1671 DUE 10/2022 VERIFIED SRM APPLICABILITY AND OUT OF LIMITS PER SRM 53-00-53-1A-2 STEP 4.A2;[02] INSPECTED ACTION 1; VERIFIED MEASUREMENT TABLE;[03] UPON FUTHER INVESTIGATION CORRECTIVE ACTION #1:REMOVED CORROSION ON FLOOR TO SIDEWALL SUPPORT AT CARGO BAY BS 500A -500D RBL23 AT DISCREPANCY AREA B/S 500A L=1.700' W=0.800' D=0.020 ORIGINAL THICKNESS 0.040 REMAINING MAT 0.020 MAT LOSS 0.020 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 USED TOOL ID ATS 1671 DUE 10/2022 VERIFIED SRM APPLICABILITY AND OUT OF LIMITS PER SRM 53-00-53-1A-2 STEP 4.A2;[04] INSPECTED ACTION 3;[05] RECEIVED ; LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT P/N 143A7501U186 LOT#1480585-1 IAW SRM 51-40-05 AND DWG 143A7500 REV:-;[06] FAULT RESOLVED ON CUST SYSTEM ID: TTG8Q004D40T;[07] CORRECTIVE ACTION ITEM 6 CORRECTION: 'FAULT RESOLVED ON CUST SYSTEM ID: TTG8Q004D40T' ENTERED IN ERROR; DISREGARD.;[08] VERIFIED CORRECTIVE ACTION 5.

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