Service difficulty report · Skin · Boeing 7377BD

Difficulty date
November 19, 2025
Submitted
December 30, 2025
Operation
Air carrier
Aircraft
N7743B
Make and model
Boeing 7377BD
Aircraft serial
36718
Aircraft time
55,721 hours, 29,446 cycles
Part
Skin
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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

CORROSION ON FUSELAGE LOWER INTERNAL BLIGE SKIN COMMON TO EXTERNAL DOUBLER INSTALLED AS PER REPAIR-53EO-00182 BS747 TO BS767 BL-0 WL149. REPAIRED IAW EA 25-153-03257 WITH AN INSPECTION THRESHOLD DEFINED IN 25-153-03257-DTI.

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