Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
June 25, 2022
Submitted
July 19, 2022
Operation
Air carrier
Aircraft
N258WN
Make and model
Boeing 7377H4
Aircraft serial
32516
Aircraft time
52,954 hours, 31,553 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

L/H VAPOR BARRIER HAS A CRACK UNDER THE PREVIOUS REPAIR. / [01] MEASUREMENTS;[02] REMOVED PREVIOUS REPAIR AND PERFORMED VISUAL INSPECTION FOUND CRACK SIZE 16' AND FOUND UNWANTED MATERIAL ON VAPOR BARRIER PER B737NTM51-05-01 PART 1;[03] PREPARED DAMAGED AREA TO APPLY 24HR DRY OUT ON VAPOR BARRIER AT DAMAGED AREA PER B737 SRM 51-70-04-2R-0 PARAGRAPH(4.D);[04] VERIFIED STEP 1;[05] VERIFIED STEPS 2 AND 3;[06] APPLIED 24 HR DRY OUT ON VAPOR BARRIER DAMGED AREA AND PREPRARED AREA FOR REPAIR PER B737 SRM 51-70-04-2R-0 PARAGRAPG (4.E);[07] VERIFIED STEP #6;[08] OK TO INSTALL REPAIR;[09] REPAIRED DAMAGED AREA AT VAPOR BARRIER PER B737 SRM 51-70-04-2R-0 <BR>AND PERFORMED TAP TEST ON REPAIR AREA NO DELAMINATION FOUND PER B737NTM <BR>51-05-01 MATERIAL USED RESIN EY 3804 PO# 1753794 FIBER GLASS PO#1690463.;[10] VERIFIED REPAIR;[11] APPLIED PRIMER & TOP COAT AT REPAIRED VAPOR BARRIER WEB; AS PER B737-7 AMM 51-21-72 & 51-21-73.;[12] VERIFIED STEP 11

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