# SDR SWAA2024121055909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 2024
- Submitted: December 10, 2024
- Operation: Air carrier
- Aircraft: [N274WN](https://openairdocs.org/aircraft/N274WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32529
- Aircraft time: 57,880 hours, 34,803 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- 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/SWAA2024121055909

## Discrepancy

CORROSION ON SUPPORT ZEE LOCATED BTW BS727D TO BS747 WL156 AND LBL21 AFT CARGO COMPARTMENT 2024-685337<[01] TOOL USED ON STEP 4 ULTRASONIC THICKNESS GAUGE P/N 45MG; S/N 221860711 DUE DATE 21-NOV-24;[02] REPLACED SUPPORT ZEE LOCATED BTW BS727 TO BS847 WL156 AND LBL21;AFT CARGO COMPARTMENT IAW B737-700 SRM 53-00-53-2R-6 REPAIR 6;FIG 203 SHEET 1;SRM 51-40-02;SRM 51-10-02 ITEM 9;DWG 146A7500 SHEET 85 REV A;SEE INDIVIDUAL SIGN OFF BELOW;[03] REPLACED SUPPORT ZEE LOCATED BTW BS727 TO BS847 WL156 AND LBL21;AFT CARGO COMPARTMENT IAW B737-700 SRM 53-00-53-2R-6 REPAIR 6;FIG 203 SHEET 1;SRM 51-40-02;SRM 51-10-02 ITEM 9;DWG 146A7500 SHEET 85 REV A;SEE INDIVIDUAL SIGN OFF BELOW<BR>RII CERTIFIED

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.