SDR UIEA2025122401358

Service difficulty report · Skin · Boeing 74745EF

Difficulty date: December 24, 2025
Submitted: December 26, 2025
Operation: Air carrier
Aircraft: N487MC
Make and model: Boeing 74745EF
Aircraft serial: 30609
Aircraft time: 101,884 hours, 18,556 cycles
System (JASC): 5753 · Trailing Edge Flaps
Part: Skin
Condition: Damaged
Location: Zone 500 Flap
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

LT WING OTBD FORE FLAP OTBD END LOWER SURFACE L/E DAMAGED ABOUT 6 INCHES INBD OF OTBD EDGE(<P>PERMANENT COMPOSITE REPAIR MADE TO LH WING OTBD FORE FLAP LOWER SURFACE 9" FORM OTBD EDGE AND 19" FORM LOWER EDGE. SIZE AFTER REPAIR L 5" W 4" PER B747-400 SRM 51-70-07 PAR. 4C, E, F, G. NO FURTHER DEFECTS NOTED</P>)

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