SDR DALA13003866307

Service difficulty report · Failsafe · 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): 5310 · Fuselage Main, Structure
Part: Failsafe
Condition: Cracked
Location: Bs 1180
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 OPEN HOLE HFEC INSPECTION ON LT SIDE BS 1180 TENSION TIE, FOUND ONE CRACK AT FAIL SAFE CHORD, UPPER ROW 1ST FASTENER HOLE FROM OTBD. REPAIR CARRIED OUT IAW SRM 53-40-07, FIG 201, REPAIR 4. FAILSAFE REPAIR CARRIED OUT IAW SRM 51-70-11, FIG 1, STEEL PLATE R & R IAW SRM 51-40-02 AND 'C' CHANNEL FWD AND AFT SEGMENT. R & R AND ESTABLISHED MONITORING ON 'C'CHANNEL SECTION SRM 53-40-30 REPAIR 1, PAGE 214.