Service difficulty report · Frame · Boeing 7377H4

Difficulty date
June 21, 2023
Submitted
July 28, 2023
Operation
Air carrier
Aircraft
N441WN
Make and model
Boeing 7377H4
Aircraft serial
29837
Aircraft time
66,664 hours, 39,529 cycles
Part
Frame
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

LW INBD FIXED L/E WTB END RIB ASSEMBLY STRAKELET FRAME SHOWS EVIDENCE OF CRACK.<[01] REMOVED AND REPLACED AT L/W INBD FIXED L/E END RIB THE STRAKELET FRAME AS PER B737-700 SRM 51-40-02-0G-0 AND DWG# 116A3110;[02] VERIFIED STEP 1

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