SDR UIEA2026050400292

Service difficulty report · Beam · 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): 5710 · Wing Main, Frame Structure
Part: Beam
Condition: Cracked
Location: Zone 600
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

RHW L/E D-BEAM LOWER CHORD AT ILES 690 FOUND CRACK(<P>LOWER CHORD FABRICATED AS PER BOEING DWG 65B12246 AND PL, AND NEW LOWER CHORD REPLACED AS PER SRM 51-10-02, AND NEW LOWER CHORD HOLE TRANSFERRED AS PER SRM 51-40-05, AND NEW LOWER CHORD INSTALLED AS PER SRM 51-40-02. NO FURTHER DEFECTS NOTED</P>)

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