# SDR SWAA2023050321074

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2023
- Submitted: May 3, 2023
- Operation: Air carrier
- Aircraft: [N436WN](https://openairdocs.org/aircraft/N436WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32456
- Aircraft time: 66,420 hours, 39,287 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- 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/SWAA2023050321074

## Discrepancy

CORROSION STRINGER 23R LOCATED BS540 AT FWD CARGO COMPARTMENT 2023-208784<[01] TOOL USED: ULTRASONIC THICKNESS GAGE P/N:45MG S/N: 130064101 DUE DATE: 12-OCT-23;[02] TOOL USED: TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811019 DUE DATE: 25-JAN-24. TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811020 DUE DATE: 25-JAN-24.;[03] PERFORMED REPAIR STRINGER 23R LOCATED BS540 AT FWD CARGO COMPARTMENT IAW B737-700 IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 PARAGRAPH 4<BR>SEE INDIVIDUAL SIGNSOFF BELOW.;[04] PERFORMED REPAIR STRINGER 23R LOCATED BS540 AT FWD CARGO COMPARTMENT IAW B737-700 IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 PARAGRAPH 4 <BR>SEE INDIVIDUAL SIGNSOFF BELOW RII

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