Service difficulty report · Frame · Boeing 7377H4

Difficulty date
July 10, 2024
Submitted
August 7, 2024
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
66,062 hours, 39,438 cycles
Part
Frame
Condition
Cracked
Location
Zone 100
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

CRACK FOUND DURING HFEC OPEN HOLE INSPECTION OF R/H BS727 INNER CHORD AT STR-18A; LOCATED AT LOWER HOLE; IN MOST O/B LAYER OF STACK-UP AT 9:00 POSITION<[01] REMOVED AND REPLACED STA 727 R/H FRAME INNER CHORD AT S-18A; AFT LOWER FITTING AS PER 51-40-02; DWG#146A0062; AND EA 24-153-01895.;[02] VERIFIED COMPLETION CORRECTIVE ACTION 1 AND MEASUREMENT TABLE.

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