Service difficulty report · Vapor Barrier · Boeing 737*

Difficulty date
February 4, 2022
Submitted
March 22, 2022
Operation
Air carrier
Aircraft
N946WN
Make and model
Boeing 737*
Aircraft serial
36918
Aircraft time
38,769 hours, 23,511 cycles
Part
Vapor Barrier
Condition
Debonded
Location
Wheel Well
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

LOWER FUSELAGE L/H WHEEL WELL VAPOR BARRIER LBL 35' AND 9' FROM BOTTOM PREVIOUS REPAIR SEALANT DISBONDING / [01] PREPARED DAMAGEAREA FOR DRY-OUT AT VAPOR BARRIER B737-700 51-70-2R-0;[02] VERIFIED STEP #1.;[03] PERFORMED DRY OUT ON L/H VAPOR BARRIER AS PER B737 SRM 51-70-04-2R-10;[04] CORRECTING REF ON STEP 1: PREPARED DAMAGE AREA FOR DRY-OUT AT VAPOR BARRIER PER REF B737-700 SRM 51-70-04-2R-0;[05] VERIFIED 2-3. OK TO INSTALL REPAIR.;[06] VERIFIED STEP #4.;[07] REPAIRED CRACK DAMAGE SIZE 15' ON L/H VAPOR BARRIER LBL. 35' AS PER B737-700 SRM 51-70-04-2R-10 MATERIALS USED PO# 1746221 AND PO# 1690463;[08] VERIFIED STEP #7; CRACKED REPAIRED.;[09] RESTORED FINISHED ON REPAIR AREA PER REF B737 AMM 51-21-73-370-803;[10] REPAIRED CRACK DAMAGE SIZE 15' ON L/H VAPOR BARRIER LBL. 35' AS PER B737-700 SRM 51-70-04-2R-10;[11] STEP #8 CHANGE TO (RII) VERIFIED STEP #7; CRACKED REPAIRED.;[12] NOTE: (RII) FINAL INSPECTION; VERIFIED STEPS #9 AND #10.