# SDR SWAA2024011933651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2023
- Submitted: January 19, 2024
- Operation: Air carrier
- Aircraft: [N457WN](https://openairdocs.org/aircraft/N457WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33856
- Aircraft time: 65,535 hours, 39,332 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2024011933651

## Discrepancy

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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