Service difficulty report · Stiffener · Boeing 74745EF

Difficulty date
July 29, 2026
Submitted
July 30, 2026
Operation
Air carrier
Aircraft
N485MC
Make and model
Boeing 74745EF
Aircraft serial
30607
Aircraft time
113,499 hours, 20,012 cycles
Part
Stiffener
Condition
Cracked
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

STIFFENER CRACK AT LHS WLG W/W STA 1241 LBL 85.65 REAR SPAR WEB HAND O/J PUMP I/B AREA. STIFFENER FABRICATED AS BOEING DWG 65B10671 AND PL REV LTR AND NEW STIFFENER HOLES TRANSFERRED AS PER SRM 51-40-05 AND NEW STIFFENER INSTALLED AS PER SRM 51-40-02. NO FURTHER DEFECTS NOTED.

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