Service difficulty report · Stringer · Boeing 737790

Difficulty date
August 9, 2022
Submitted
August 26, 2022
Operation
Air carrier
Aircraft
N560WN
Make and model
Boeing 737790
Aircraft serial
30542
Aircraft time
70,697 hours, 34,642 cycles
Part
Stringer
Condition
Cracked
Location
Fwd Cargo
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 STRINGER END AT BS 540 L/H STRINGER 26. / [01] SRM 53-00-03-1A-1 ALLOWABLE DAMAGE 1 AND SRM 53-00-03-2R-1 REPAIR 1 ARE APPLICABLE TO THIS A/C;[10] FABRICATED REPAIR PARTS -7 REPLACEMENT STRINGER SECTION FROM HFAB53-STS-011 PO NUMBER 878533 /1; -1 HAT SECTION SPLICE FROM MATERIAL 69-78188-14 LOT# 1460965-1 LOCATED AND DRILLED REPAIR PARTS AND APPLIED CHEMICAL CONVERSION COATING IAW SRM 53-00-03-2R-1 REPAIR 1 OK TO PRIMER;[11] VERIFIED CORRECTIVE ACTIONS 9 AND 10;[12] APPLIED PRIMER ON REPAIR PARTS; STRINGER SECTION AND HAT SECTION SPLICE IAW SRM 53-00-03-2R-1 REPAIR 1; OK TO INSTALL;[13] VERIFIED CORRECTIVE ACTION 12. OK TO INSTALL STRINGER SECTION AND HAT SPLICE.;[14] INSTALLED REPAIR PARTS -7 REPLACEMENT STRINGER SECTION AND -1 HAT SECTION IAW SRM 53-00-03-2R-1 REPAIR 1;[15] COMPLETED PARTIAL STEP 5;[16] VERIFIED CORRECTIVE ACTION 14.<BR>COMPLETED STEP 5;[17] PARTIAL STEPS 1-4.<BR>OK TO INSTALL;[18] COMPLETED STEP 3 AND 4;[19] COMPLETED STEP 1 AND 2;[20] VERIFIED STEPS 1 AND 2 COMPLETE.;[21] VERIFIED MEASUREMENT TABLE AND WORK SCOPE COMPLETE.