# SDR SWAA2024120656745

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2024
- Submitted: December 6, 2024
- Operation: Air carrier
- Aircraft: [N8605E](https://openairdocs.org/aircraft/N8605E), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36891
- Aircraft time: 39,948 hours, 18,873 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Zn 200 Fus Top
- 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/SWAA2024120656745

## Discrepancy

CORROSION ON INTERCOSTAL FLOOR STRUCTURE BS 328 TO BS 344 AND LBL 24.75 WL208.1 AT FWD GALLEY AREA 2024-686165<[01] STEP 5 TOOL USED: ULTRASONIC THICKNESS GAGE; P/N:45MG; S/N:232019809; DUE DATE: 08-OCT-25.;[02] REPLACED INTERCOSTAL LOCATED ON FLOOR STRUCTURE BS 328 TO BS 344 AND LBL 24.75 WL208.1 AT FWD GALLEY AREA I.A.W. B737-800 SRM 51-40-02 AND DWG 141A5730 SHEET 5 REV. B<BR><BR>SEE INDIVIDUAL SIGN-OFF BELOW;[03] CORRECTED STEP #2 <BR>REPLACED INTERCOSTAL LOCATED ON FLOOR STRUCTURE BS 328 TO BS 344 AND LBL 24.75 WL208.1 AT FWD GALLEY AREA I.A.W. B737-800 SRM 51-40-02 AND SRM 51-10-02 ITEM 9 DWG 141A5730 SHEET 5 REV. B;[04] CORRECTED STEP #3 REPLACED INTERCOSTAL LOCATED ON FLOOR STRUCTURE BS 328 TO BS 344 AND LBL 24.75 WL208.1 AT FWD GALLEY AREA I.A.W. B737-800 SRM 51-40-02 AND SRM 51-10-02 ITEM 9 DWG 141A5730 SHEET 5 REV. BSEE INDIVIDUAL SIGN-OFF BELOW;[05] REPLACED INTERCOSTAL LOCATED ON FLOOR STRUCTURE BS 328 TO BS 344 AND LBL 24.75 WL208.1 AT FWD GALLEY AREA I.A.W. B737-800 SRM 51-40-02 AND SRM 51-10-02 ITEM 9 DWG 141A5730 SHEET 5 REV. B SEE INDIVIDUAL SIGN-OFF BELOW

---
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.