# SDR SWAA2023081472286

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2023
- Submitted: August 14, 2023
- Operation: Air carrier
- Aircraft: [N446WN](https://openairdocs.org/aircraft/N446WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29842
- Aircraft time: 63,739 hours, 37,814 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: UNKNOWN
- Condition: Corroded
- 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/SWAA2023081472286

## Discrepancy

CORROSION STRINGER 25L LOCATED BS540 FWD CARGO COMPARTMENT 2023-413154<[01] TOOL USED: ULTRASONIC GAGE: P/N: 45MG; S/N: 221859911; DUE DATE: 07-NOV-23;[02] TOOLS 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 EQUIPMENT; P/N: NORTEC 600D; S/N: 60009161631; DUE DATE: 31/JAN/24.;[04] PERFORMED PERMANENT REPAIR ON STRINGER 25L LOCATED BETWEEN BS540 TO BS 500D FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND DWG 143A3230 REV. A SEE INDIVIDUAL SIGN OFF BELLOW.;[05] PERFORMED PERMANENT REPAIR ON STRINGER 25L LOCATED BETWEEN BS540 TO BS 500D FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND DWG 143A3230 REV. A SEE INDIVIDUAL SIGN OFF BELLOW.<BR>RII

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