Service difficulty report · Skin · Boeing 75733N

Difficulty date
December 8, 2025
Submitted
December 10, 2025
Operation
Air carrier
Aircraft
N77865
Make and model
Boeing 75733N
Aircraft serial
32589
Aircraft time
72,509 hours, 21,526 cycles
Part
Skin
Part number
146N55212
Part serial
NA
Condition
Corroded
Location
Zone 200
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

AFT CABIN METALIC PRESSURE DECK BETWEEN BS 1680 - 1720, UPPER SURFACE CORRODED BETWEEN LT CREASE BEAM TO RT CREASE BEAM. REF NRC 137952. REMOVED CORROSION AT AFT CABIN FLOOR METALIC PRESSURE DECK BETWE EN BS 1680 - 1720 UPPER SURFACE AND FOUND WITHIN LIMITS IAW SRM 51-10-02, SRM 53-60-51-01-1, SRM 53-00-51-1A-1 AND REMOVED AND REPLACED DOUBLER IAW SRM 51-10-02 SRM 51-40-02.

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