Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
July 20, 2021
Submitted
July 26, 2021
Operation
Air carrier
Aircraft
N955WN
Make and model
Boeing 7377H4
Aircraft serial
36671
Aircraft time
34,250 hours, 20,768 cycles
Part
Stiffener
Condition
Cracked
Location
Lt Wing
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

LEFT INBOARD FIX TRAILING EDGE FIXED TRAILING EDGE UPPER WING PANEL LOWER STIFFENER CRACK APPROX. WING STATION 278 DIRECTLY BEHIND #1 ENGINE PYLON APPROX. 1 INCH ON OUT BOARD CORNER LEADING ; / [01] REMOVED LOWER CRACKED STIFFENER AND LOCATED AND DRILLED NEW STIFFENER PER SRM 51-40-02 AND PER SRM 51-40-05.; [02] REMOVED AND REPLACED PANEL SUPPORT AT WS278 PER SRM 51-40-02

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