Service difficulty report · Vapor Barrier · Boeing 737

Difficulty date
December 1, 2021
Submitted
April 28, 2022
Operation
Air carrier
Aircraft
N234WN
Make and model
Boeing 737
Aircraft serial
32502
Aircraft time
52,359 hours, 31,270 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Center Wing
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

SUPPLEMENTAL INFORMATION: CRACKED LOWER R/H COMPOSITE BULKHEAD AT BS663 RBL50 WL164. ; / [01] PARTIAL ACCOMPLISHED FOR STEP 1.; [02] PARTIAL ACCOMPLISHED FOR STEP 2.; [03] PARTIAL ACCOMPLISHED FOR STEP 3.; [04] PARTIAL ACCOMPLISHED ON STEP 4.; [05] UPDATED MEASUREMENT TABLE; [06] REMOVED LOWER VAPOR BARRIER BS 663 RBL8-RBL72 WL164-WL147 IAW SRM 51-40-02.; [07] CORRECTED STEP 2 TO A PARTIAL; [08] FABRICATED BS663 R/H VAPOR BARRIER IAW BOEING DRAWING 111A1151-4 REFER TO ATS BUILD SHEET 783269-ATS; [09] CONFORMED BS 663 R/H VAPOR BARRIER PER BOEING DRAWING 111A1151-4 REFER TO ATS BUILD SHEET 783269-ATS; [10] PARTIAL ACCOMPLISHED ON STEP 5; [11] LOCATED AND DRILLED NEW BS663 R/H VAPOR BARRIER IAW SRM 51-40-05 AND DWG #111A1000.; [12] VERIFIED CORRECTIVE ACTION 11.; [13] PARTIAL ACCOMPLISHED FOR STEP 7; [14] OK TO INSTALL LOWER VAPOR BARRIER ASSEMBLY; [15] VERIFIED CORRECTIVE ACTION ENTRIES 13. AND 14.<BR><BR>OK TO INSTALL LOWER VAPOR BARRIER ASSY.; [16] INSTALLED VAPOR BARRIER WEB PER SRM 51-40-02-0G-0 AND DWG 111A1000; DWG111A1001; AND DWG 111A7000;