SDR DALA1106486308

Service difficulty report · Bulkhead · Boeing 747451

Difficulty date: January 27, 2011
Submitted: January 27, 2011
Operation: Air carrier
Aircraft: N668US
Make and model: Boeing 747451
Aircraft serial: 24223
Aircraft time: 88,742 hours, 10,970 cycles
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Bulkhead
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

DURING PERFORM OPEN HOLE HFEC INSP CRACK WAS FOUND IN 1 OF THE HOLES ON NS2598 BULKHEAD THE SAME 5312-01144-FOR PERFORM J/C 5312-01144-04B FOUND CRACK IN ONE OF THE HOLE OF BS2598 BULKHEAD IAW SRM 53-80-08, REPAIR 11 ER/A488618-14, REV 2 IAW FORM REPAIR. IAW SRM53-80-08, REPAIR 11, REQUIRE REPEAT INSPECTION: OPEN HOLE AND EDDY CURRENT INSP THRESHOLD 6000 CYCLES AFTER REPAIR INSTALLATION. INSPECTION INTERVAL 1500 CYCLES.