Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
November 17, 2024
Submitted
November 20, 2024
Operation
Air carrier
Aircraft
N937WN
Make and model
Boeing 7377H4
Aircraft serial
36644
Aircraft time
50,611 hours, 30,853 cycles
Part
Vapor Barrier
Condition
Cracked
Location
Zn 100 Fus Lower
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

CENTER WING REAR SPAR VAPOR BARRIER HAS A DIAGONAL 4' CRACK AT 33LBL; BETWEEN 2' TO 6 ' FROM LOWER END.<[01] FOUND ADDITIONAL DAMAGE IN VAPOR BARRIER EXTENDING UPWARDS FURTHER THAN NOTED WRITE UP. REF N/R TTG8Q00X43UL FOR CORRECTIVE ACTION.;[02] FOUND ADDITIONAL DAMAGE IN VAPOR BARRIER EXTENDING UPWARDS FURTHER THAN NOTED WRITE UP. REF N/R TTG8Q00X43UL FOR CORRECTIVE ACTION.

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