Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
June 23, 2022
Submitted
August 10, 2022
Operation
Air carrier
Aircraft
N951WN
Make and model
Boeing 7377H4
Aircraft serial
36665
Aircraft time
39,132 hours, 23,683 cycles
Part
Sidewall Support
Part number
143A750112
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

FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT IS CORRODED AT STA 400+6; 400+14; AND 400+18; RBL 25; WL 156. / [01] REMOVED CORROSION ON FWD CARGO BAY R?H FLOOR TO SIDEWALL SUPPORT RBL 25; WL 156 ; WORK AREA BS 400+6 ;L 1.0' X W 1.0' X D 0.015' ; BS 400+14; L 1.0' X W 1.0' X D 0.014'; BS 400+18 ; L 1.0' X W 1.0' X D 0.017' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 ; USE DEPTH GAGE; ID: ATS1225; S/N: UNKNOWN ; DUE: 07/2022;[02] VERIFIED CORRECTIVE ACTION 1;[03] SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS;[04] FABRICATED; LOCATED AND DRILLED NEW FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT AT BS 396 TO BS 420 ; RBL 25 WL 156 IAW SRM 51-40-05-0G-0 AND DWG 143A7501; ID:0071;REV:-; BAC1496-444#7075T62; LOT#1487676-1; APPLIED CHEMICAL CONVERTION IAW AMM 51-21-41-370-802; OK TO APPLY PRIMER;[05] VERIFIED CORRECTIVE ACTIONS 1;3 AND 4.;[06] APPLIED PRIMER ON FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT AT BS 396 TO BS 420 ; RBL 25 WL 156 IAW SRM 51-21-72-370-804;[07] VERIFIED CORRECTIVE ACTION 6 COMPLETED;[08] VERIFIED MEASUREMENT TABLE

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