SDR SWAA2021122045411

Service difficulty report · Stringer · Boeing 737790

Difficulty date: November 17, 2021
Submitted: December 20, 2021
Operation: Air carrier
Aircraft: N562WN
Make and model: Boeing 737790
Aircraft serial: 30778
Aircraft time: 65,978 hours, 32,511 cycles
System (JASC): 5313 · Fuselage Main, Longeron/Stringer
Part: Stringer
Condition: Cracked
Location: Fuselage
Stage of operation: UK
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 STRINGER 25R LOCATED BS540 FWD CARGO COMPARTMENT (1 EA) ; 2021-522219 / [01] TOOL USED 35DL;S/N:091419910;DUE DATE:30-NOV-21.[06] CORRECTED STEP 4 REPAIRED STRINGER 25R LOCATED BS540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1; AND DWG # 143A3230 REV:A ; 143A7902 REV:A ; 143A1215 REV:-MATERIAL USED P/N: 7075T0/0.036? PO: 2021-131796; P/N: 7075T0/0.040? PO: 2021-180663. HEAT TREATED AND CONVERTED FROM 7075T0 TO 7075T6 IAW BAC5602; TABLE IV AND TABLE X.