Service difficulty report · Stringer · Boeing 73776N

Difficulty date
December 30, 2022
Submitted
January 27, 2023
Operation
Air carrier
Aircraft
N7812G
Make and model
Boeing 73776N
Aircraft serial
32582
Aircraft time
56,870 hours, 33,864 cycles
Part
Stringer
Condition
Cracked
Location
Zone 100
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

CRACK ON FWD CARGO BAY END OF STRINGER AT BS 540 STRINGER 23L.<[01] INSTALLED EWIS PROTECTION ON REPAIR AREA IAW SOPM 20-60-07.;[02] REMOVED DAMAGE AREA BS 540-500D+11' STR 23L IAW SRM 53-00-03-2R-1 REP.1.;[03] REMOVED DAMAGE AREA BS 540-500D+11' STR 23; AND NO ADDITIONAL DAMAGED FOUND ON REPAIR AREA IAW SRM 53-00-03-2R-1 REP.1;[04] VERIFIED CORRECTIVE ACTION 1 AND 3.;[05] REQUIRED NDI INSPECTION HFEC ON CUT OUT EDGE BS 500D+11' STR 23L IAW SRM 53-00-03-2R-1 REP.1.;[06] ACCOMPLISHED NDI INSPECTION HFEC ON CUT OUT EDGE BS 500D+11' STR 23L IAW SRM 53-00-03-2R-1 REP.1 AND NDTM D6-37239 PART 6 51-00-00 PROC 23; NO CRACKS FOUND. TOOL I.D. IS000450 500D;[07] RECEIVED PARTS FRPM OSS REPAIR FILLER MATERIAL USED 7075T6 CLAD 0.036' LOT#1482127-1 R.O 899452-SWA; REPAIR DOUBLER MATERIAL USED 7075T6 CLAD 0.040' LOT#1430174-1 R.O 899455-SWA; LOCATED; DRILLED; APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 53-00-03-2R-1 REP.1 AND OK TO INSTALL.;

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