# SDR SWAA2024121055897 - 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): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315) - Part: Floorbeam - 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/SWAA2024121055897 ## Discrepancy CORROSION ON FLOOR BEAM STRUCTURE LOCATED BS986.3 WL208.1 AND LBL43 AT AFT GALLEY AREA 2024-685267<[01] TOOL USED STEP 6 ULTRASONIC THICKNESS GAGE PN: 45MG SN: 130064101; DUE DATE: 13-DEC-24;[02] ON STEP 9: TOOL USED EDDY CURRENT EQUIPMENT PN: NORTEC500D; SN: N500X1693P030456 DUE DATE: 14 APR 25.;[03] EQUIPMENT P/N PHASEC 3D; S/N 587435/07; DUE DATE 20-MAR-25 WAS USED ON STEP 11 AND STEP 12;[04] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 53-70-51-2R-6; REPAIR 6.
SEE INDIVIDUAL SIGN OFF BELOW.;[05] CORRECTED STEP 4. PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 SRM 53-70-51-2R-6; REPAIR 6.
SEE INDIVIDUAL SIGN OFF BELOW.;[06] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 SRM 53-70-51-2R-6; REPAIR 6.
SEE INDIVIDUAL SIGN OFF BELOW.RII ITEM --- 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.