Service difficulty report · Stringer · Boeing 737*

Difficulty date
March 1, 2022
Submitted
March 28, 2022
Operation
Air carrier
Aircraft
N238WN
Make and model
Boeing 737*
Aircraft serial
34713
Aircraft time
53,117 hours, 31,534 cycles
Part
Stringer
Condition
Cracked
Location
Fuselage
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

CRACKED STRINGER AT AREA AFT OF FCB BS537 S-23R WL164. MARKED / [01] CUT AND REMOVED THE DAMAGED PART OF FCB STRINGER 23R FROM BS 500D + 11' TO BS 540 IAW SRM 53-00-53-2R-1 REPAIR 1;[11] INSTALLED THE NEW REPLACEMENT STRINGER AND THE NEW HAT SECTION SPLICE AT FCB BETWEEN BS 500D - BS 540 STR 23R ; APPLIED A FILLET SEAL AND CIC AROUND THE REPAIR AREA IAW SRM 53-00-03-2R-1 REPAIR 1;[12] ADDED REFERENCE # TO ITEM #7 ALL THE REPAIR PARTS WERE FABRICATED IAW SRM 53-00-03-2R-1 REPAIR 1;[13] VERIFIED INSTALLED THE NEW REPLACEMENT STRINGER AND THE NEW HAT SECTION SPLICE AT FCB BETWEEN BS 500D - BS 540 STR 23R ; APPLIED A FILLET SEAL AND CIC AROUND THE REPAIR AREA IAW SRM 53-00-03-2R-1 REPAIR 1 PENDING ENGINEERING.<BR>VERIFIED COMPLETE STEP 1; 2.;[14] PRIOR TO ACTION 11; PERFORMED DVI OF REPAIR AREA; NO DEFECTS NOTED;[15] LATE ENTRY DUE TO THIS INSPECTOR TOOK THE CALL BUT DID NOT DOCUMENT THE INSPECTIONS AT THAT TIME: ON 03-MAR-2022 HFEC INSPECTED TRIMMED EDGE OF CUTOUT; OPEN FASTENER HOLES AND COUNTERSINKS IN THE REPAIR AREA PER 737NDT PART 6 51-00-00 PROCEDURES 23 AND 16 AND 53-30-00 PROCEDURE 3.;[16] NO CRACKS FOUND. TOOL N600 ATS2353.;[17] COMPLETED REPAIR PER EA 22-153-00704;[18] CRACKED STRINGER 23R AT BS 537 WAS REPAIRED PER EA 22-153-00704.