Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
December 19, 2023
Submitted
January 19, 2024
Operation
Air carrier
Aircraft
N457WN
Make and model
Boeing 7377H4
Aircraft serial
33856
Aircraft time
65,535 hours, 39,332 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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 25L LOCATED BS 540 AT FWD CARGO COMPARTMENT 2023-766649<[01] TOOL USED UT EQUIPMENT P/N: 45MG; S/N: 130061901; CAL DUE DATE: 09-JUN-24;[02] TOOL USED: TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811020 DUE DATE: 25-JAN-24. TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811019 DUE DATE: 25-JAN-24.;[03] TOOL USED: EDDY CURRENT INSTRUMENT P/N: NORTEC 600D; S/N: 210138503; DUE DATE: 21-JUL-24;[04] PERFORMED MAJOR PERMANENT REPAIR STRINGER 25L LOCATED BETWEEN BS 500D TO BS 540 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 53-00-03-2R-1 REPAIR 1 STEP 4. K AND SRM 51-40-02; DWG 143A0060; SHEET 31; REV. A AND DWG: 143A3230; SHEET: 121; REV. A AND FASTENERS.;[05] PERFORMED MAJOR PERMANENT REPAIR STRINGER 25L LOCATED BETWEEN BS 500D TO BS 540 AT FWD CARGO COMPARTMENT I.A.W. B737-700 SRM 53-00-03-2R-1 REPAIR 1 STEP 4. K AND SRM 51-40-02; DWG 143A0060; SHEET 31; REV. A AND DWG: 143A3230; SHEET: 121; REV. A AND FASTENERS AS RII

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