Service difficulty report · Skin · Boeing 7377H4

Difficulty date
December 12, 2023
Submitted
December 15, 2023
Operation
Air carrier
Aircraft
N456WN
Make and model
Boeing 7377H4
Aircraft serial
32463
Aircraft time
63,508 hours, 38,055 cycles
Part
Skin
Part number
UNKNOWN
Condition
Cracked
Location
Zn 500 Left Wing
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

L/H WING LOWER LEADING EDGE PANEL 521CB IS DAMAGED ON THE INBOARD AFT CORNER. LOWER OUTER SKIN IS CRACKED 0.350 INCHES FROM INBOARD EDGE AND CRACK MEASURES 0.700 INCHES LONG.<[01] PERFORMED TIME LIMITED REPAIR ON PANEL 521CB IAW TSR 2023009725; ON FAULT TTG8Q00Q808E.;[02] PERFORMED TIME LIMITED REPAIR ON PANEL 521CB IAW TSR 2023009725 AND EA 23-157-03618; ON FAULT TTG8Q00Q808E.;[03] ADDED THE REFERENCE FOR THE DEFERRAL.

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