Service difficulty report · Barrier · Boeing 7377H4

Difficulty date
July 19, 2022
Submitted
August 10, 2022
Operation
Air carrier
Aircraft
N260WN
Make and model
Boeing 7377H4
Aircraft serial
32518
Aircraft time
52,920 hours, 31,399 cycles
Part
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

R/H VAPOR BARRIER CRACKED / [01] MEASUREMENTS;[02] PERFORMED VISUAL INSPECTION ON R/H VAPOR BARRIER AND FOUND CRACK OF 11' AND FOUND CONTAMINATION PER B737 NDTM 51-05-01;[03] PERFORMED STOP DRILL SIZE 0.25 DIAMETER AT THE END OF CRACK PER B737 SRM 57-10-10-2R-2 STEP 6.B;[04] PREPARED DAMAGED AREA ON VAPOR BARRIER FOR REPAIR PER B737 SRM 51-70-04-2R-10 AND 51-70-04-2R-0 PARAGRAPH 4.E;[05] CORRECTION TO STEP 4: PREPARED VAPOR BARRIER FOR 24HR DRY-OUT PER B737 SRM 51-70-04-2R-0 PARAGRAPH 4.D;[06] VERIFIED STEPS 1-5. OK TO APPLY 24HR DRY;[07] APPLIED DRY OUT PROCESS AT R\H VAPOR BARRIER ON REPAIR AREA PER B737 SRM<BR>51-70-04-2R-0 PARAGRAPH(4.D) AND OK TO APPLY REPAIR AREA PER B737SRM<BR>51-70-04-2R-0 PARAGRAPH(4.E);[08] VERIFIED STEP 7. OK TO APPLY REPAIR.;[09] REPAIRED R/H VAPOR BARRIER ON DAMAGE AREA WITH A PERMANENT REPAIR AS PER B737 SRM 51-70-04-2R-10. MATERIALS USED PO#1774613 AND PO#1690463;[10] VERIFIED STEP 9;[11] STEPS 3; 5; 7 AND 8 ARE RII;[12] APPLIED TEFLON PAINT ON R/H VAPOR BARRIER REF B 737 AMM 51-21-81-370-801;[13] VERIFIED STEP 12;[14] TASK C/W;[15] TASK C/W

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