SDR UIEA2026042400246

Service difficulty report · Web · Boeing 74747UF

Difficulty date: May 23, 2026
Submitted: May 27, 2026
Operation: Air carrier
Aircraft: N477MC
Make and model: Boeing 74747UF
Aircraft serial: 29255
Aircraft time: 108,821 hours, 19,065 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Condition: Cracked
Location: Zone 200
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

U/D LBL 10 TO LBL 35 BS 500 - BS 540 FLOOR SUPPORT SHEAR WEB CORROSION(<P>SHEAR WEB FABRICATED AS PER BOEING DWG 141U5421 AND PL, AND NEW SHEAR WEB HOLES TRANSFERRED AS PER SRM 51-40-05, AND NEW SHEAR WEB INSTALLED AS PER SRM 51-40-02. NO FURTHER DEFECTS NOTED</P>)

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