SDR UIEA2026041700209

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: Corroded
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 20 BS 480 TO 500 FLOOR SUPPORT WEB FOUND CORROSION(<P>WEB FABRICATED AS PER DWG 141U5421 AND PL, WEB REPLACED AS PER SRM 51-10-02, AND NEW WEB HOLES TRANSFERRED AS EPR SRM 51-40-05, AND NEW WEB INSTALLED AS PER SRM 51-40-02. NO FURTHER DEFECTS NOTED</P>)

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