SDR DALA13003816307

Service difficulty report · Shear Web · Boeing 747451

Difficulty date: December 23, 2012
Submitted: January 23, 2013
Operation: Air carrier
Aircraft: N667US
Make and model: Boeing 747451
Aircraft serial: 24222
Aircraft time: 97,560 hours, 11,953 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Shear Web
Condition: Cracked
Location: Bs 1140
Stage of operation: IN
How discovered: 9
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

DURING HFEC SURFACE INSPECTION ON TENSION TIE, RT SIDE, BS 1140 FWD CHANNEL TO WEB , 3RD FASTENER FROM INBD FOUND CRACK AS MARKED. RT SIDE, BS 1140 TENSION TIE SHEAR WEB REPAIR CARRIED OUT IAW SRM 53-40-30, FIG 201, REPAIR 4, AND ESTABLISHED MONITORING IAW SRM 53-40-30. REPAIR 4, PAGE 207.