SDR DALA1137616313

Service difficulty report · Frame · Boeing 747451

Difficulty date: May 25, 2011
Submitted: June 3, 2011
Operation: Air carrier
Aircraft: N673US
Make and model: Boeing 747451
Aircraft serial: 30268
Aircraft time: 51,270 hours, 6,487 cycles
System (JASC): 5311 · Fuselage Main, Frame
Part: Frame
Condition: Deformed
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

DURING MCK AT DEFORMATION WAS FOUND ON THE STA 560 FRAME UPPER CAP IN THE FWD CARGO COMPARTMENT. ER/A 491629-14 SECT I WAS ACCOMP AT THAT TIME. FOLLOW ON ACTION IS REQ FOR GAINING STAGE III APPROVAL FROM BOEING. STA MSP 25MAY11 ACCOMP ER/A 491629-14 SECTION II INSP PRIOR TO 20,000 TOTAL A/C CYCLES. CONTACT ENGINEERING AT 18,800 TOTAL A/C CYCLES SO THAT ENG MAY CONTACT BOEING AND REQUEST STAGE III APPROVAL.