SDR UIEA201000124

Service difficulty report · Web · Boeing 74747UF

Difficulty date: June 5, 2009
Submitted: April 12, 2010
Operation: Air carrier
Aircraft: N498MC
Make and model: Boeing 74747UF
Aircraft serial: 29259
Aircraft time: 43,275 hours, 6,484 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Condition: Cracked
Location: Fuselage
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

THE PURPOSE OF THIS EO IS TO RECORD A MAJOR REPAIR. DURING C CHECK INSPECTION BEING PERFORMED AT HKG; DAMAGE WAS FOUND TO THE MAIN DECK BS 1220 LBL 103, WL 184 WEB CONSISTING OF A CRACK MEASURING 2.5 IN. X 1.0 INCH (REFERENCE FIGURE 1). PERMANENT REPAIR PERFORMED IN ACCORDANCE WITH THE 747-400 SRM 51-70-13 FIGURE 201, REPAIR 1.

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