Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
June 10, 2022
Submitted
July 1, 2022
Operation
Air carrier
Aircraft
N252WN
Make and model
Boeing 7377H4
Aircraft serial
34973
Aircraft time
53,431 hours, 31,865 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

CRACK STRINGER 24L LOCATED BS540 AT FWD CARGO COMPARTMENT 2022-316956 / [01] EQUIPMENT P/N 45MG; S/N 130066701; DUE DATE 08-APR-23 WAS USED.;[02] TOOLS USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 02-FEB-23; TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112820025; DUE DATE: 01-FEB-23.;[03] TOOL USED EDDY CURRENT INSTRUMENT P/N NORTEC500D S/N N500X1693P030456 DUE DATE 26-JAN-23.;[04] PERFORMED PERMANENT REPAIR STRINGER 24L BETWEEN BS 500D TO BS 540 IAW SRM B737-700 53-00-03-2R-1 REPAIR 1 MATERIAL USED: ALUMINUM SHEET 7075-T0 0.050? P.O: 2021 139514 ANGLES (2 E/A) AND CHANNEL MATERIAL 7075-T0 0.056? P.O: 2022 102125 (CONVERTER TO 7075 T6)<BR>SEE INDIVIDUAL SIGNOFFS BELOW;[05] STEP 4 VERIFIED AND CORRECTIVE ACTION COMPLETED: ITEM RII PERFORMED PERMANENT REPAIR STRINGER 24L BETWEEN BS 500D TO BS 540 IAW SRM B737-700 53-00-03-2R-1 REPAIR 1 MATERIAL USED: ALUMINUM SHEET 7075-T0 0.050? P.O: 2021 139514 ANGLES (2 E/A) AND CHANNEL MATERIAL 7075-T0 0.056? P.O: 2022 102125 (CONVERTER TO 7075 T6) <BR>SEE INDIVIDUAL SIGNOFFS BELOW.

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