Service difficulty report · None · Boeing 7377H4

Difficulty date
August 18, 2022
Submitted
September 6, 2022
Operation
Air carrier
Aircraft
N931WN
Make and model
Boeing 7377H4
Aircraft serial
36637
Aircraft time
44,498 hours, 26,975 cycles
Part
None
Condition
Cracked
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

FOUND R/H VAPOR BARRIER DOUBLER CRACKED STA 663.75 BETWEEN RBL 5 AND RBL 30. / [01] FABRICATED R/H VAPOR BARRIER DOUBLER P/N 111A1511-28 PER DRAWING #111A1511 SHEET 25; MATERIAL USED 2024-0 .040' PO# 1679582.;[02] CORRECTING STEP1: CUT; DRILLED AND JUGGLED NEW R/H VAPOR BARRIER DOUBLER P/N 111A1511-28 (PENDING FINISH AND A FEW HOLES) PER DRAWING #111A1511 SHEET 25; MATERIAL USED 2024-0 .040' PO# 1679582.;[03] VERIFIED STEP #1 AND #2.;[04] COMPLETED FABRICATION OF NEW R/H VAPOR BARRIER DOUBLER P/N 111A1511-28 PER DRAWING #111A1511 SHEET 25; MATERIAL USED 2024-0 .040' PO# 1679582.;[05] HEAT TREATED DUBLER AT R/H VAPOR BARRIER STA 663.75 BETWEEN RBL 5 AND RBL 30 FROM 2024-0.040' TO 2024-T42 .040' CONDITION PER BOEING BAC5602;[06] VERIFIED STEPS #4 AND STEP #5.<BR>OK TO APPLY ALODINE AND PRIMER TO RH DOUBLER VAPOR BARRIER.;[07] TREATED AND PRIMED R/K VAPOR BARRIER DOUBLER AS PER REF AMM 51-21-41-370-801 AND AMM 51-21-72-370-804. DOUBLER WILL BE INSTALLED IN ITEM # TTG8Q00E6A92;[08] VERIFIED STEP 7.

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