# SDR SWAA2024012232211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2023
- Submitted: January 22, 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/SWAA2024012232211

## Discrepancy

CRACK STRINGER 23R BS 540; WL 163 FWD CARGO COMPARTMENT 2023-766576<[01] TOOL USED ULTRASONIC THICKNESS GAUGE 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] PERFORMED PERMANENT REPAIR ON STRINGER 23R LOCATED BS 500D TO BS540 IN FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 SEE INDIVIDUAL STEP SING-OFFS BELOW;[04] PERFORMED PERMANENT REPAIR ON STRINGER 23R LOCATED BS 500D TO BS540 IN FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 SEE INDIVIDUAL STEP SING-OFFS BELOW<BR>RII

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