# SDR SWAA2023122926411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2023
- Submitted: December 29, 2023
- Operation: Air carrier
- Aircraft: [N7752B](https://openairdocs.org/aircraft/N7752B), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 33943
- Aircraft time: 49,226 hours, 25,511 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- 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/SWAA2023122926411

## Discrepancy

CORROSION ON FLOOR BEAM BS986.5 LBL43.5 WL208.1 AT AFT GALLEY AREA 2023-750328<[01] TOOL USED: ULTRASONIC THICKNESS GAGE: PN : 45MG SN: 130060401 DUE DATE: 20-MAR-24;[02] PRECISION GAUGE P/N: 2204A65 S/N: AE-411311 DUE DATE: 02/MAY/24;[03] TOOL USED: EDDY CURRENT FLAW DETECTOR P/N: NORTEC 00D; S/N: 190023010; DUE DATE: 24-JUL-24;[04] REPAIRED FLOOR BEAM BS986.5 LBL43.5 WL208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 ALTERNATIVE 4 FIGURE 205.;[05] CORRECTED STEP 4: <BR>REPAIRED FLOOR BEAM BS986.5 LBL43.5 WL208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 ALTERNATIVE 4 FIGURE 205. SEE INDIVIDUAL SIGN-OFFS BELOW.;[06] REPAIRED FLOOR BEAM BS986.5 LBL43.5 WL208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 ALTERNATIVE 4 FIGURE 205. SEE INDIVIDUAL SIGN-OFFS BELOW.<BR>AS RII

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