Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
September 12, 2025
Submitted
October 1, 2025
Operation
Air carrier
Aircraft
N909WN
Make and model
Boeing 7377H4
Aircraft serial
32458
Aircraft time
56,758 hours, 34,420 cycles
Part
Doubler
Condition
Cracked
Location
Zone 100
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

WHILE INWORK INSTALLING RH VAPOR BARRIER FOUND SUPPORTING DOUBLER IS CRACKED<[01] FABRICATED ON RH VAPOR BARRIER SUPPORTING DOUBLER FROM 2024T3#0.040 C LOT#1614857-1 IAW SRM 51-40-05 AND DWG 111A1511 ID: 0025 REV: - <BR>MATERIAL REPLACEMENT; MATERIAL 2024 T42 BY 2024T3 PER SRM 51-30-01-0G-0 STEP 8 FLAT PATTERNS TABLE A TABLE C;[02] VERIFIED CORRECTIVE ACTION #1

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