Service difficulty report · Support Beam · Boeing 7377H4

Difficulty date
June 10, 2026
Submitted
July 6, 2026
Operation
Air carrier
Aircraft
N480WN
Make and model
Boeing 7377H4
Aircraft serial
33998
Aircraft time
72,332 hours, 43,302 cycles
Part
Support Beam
Condition
Corroded
Location
Zone 500
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 BEAM TRAILING EDGE LOCATED BTW ORSS335 TO ORSS435 AT LT WING. REPLACED LOWER PANEL SUPPORT BEAM LOC. BTW ORSS335 TO ORSS439 AT LT WING AND FASTENERS IAW SRM 51-40-02; SRM 51-10-02 ITEM 9 AND DWG 115A3700 SHEET 30, REV A.

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