# SDR SWAA2023052541345

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 25, 2023
- Submitted: May 25, 2023
- Operation: Air carrier
- Aircraft: [N7860A](https://openairdocs.org/aircraft/N7860A), registered now
- Make and model: Boeing 737-79P
- Registry model: [Boeing 737-79P](https://openairdocs.org/model/boeing-737-79p) (OpenAirDocs)
- Aircraft serial: 29362
- Aircraft time: 49,661 hours, 34,220 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- 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/SWAA2023052541345

## Discrepancy

CORROSION FLOOR BEAM INTERCOSTAL LOCATED BETWEEN STA 285.62 TO STA 294.5 AND WL208.1 AND LBL 12 AT FWD GALLEY AREA 2023-282625<[01] TOOL USED DIGITAL CALIPER P/N:500-196-30; S/N:A22046819; DUE DATE: 22/JUN/23;[02] REPLACED FLOOR BEAM INTERCOSTAL LOCATED BETWEEN STA 285.62 TO STA 294.5 AND WL208.1 AND LBL 12 AT FWD GALLEY AREA IAW B737-700 SRM 51-40-02 AND DWG # 141A5600 REV: N.<BR>SEE INDIVIDUAL SIGNS-OFF BELOW.;[03] CORRECTED STEP 2 <BR><BR>REPLACED FLOOR BEAM INTERCOSTAL LOCATED BETWEEN STA 277 TO STA 294.5 AND WL208.1 AND LBL 12 AT FWD GALLEY AREA IAW B737-700 SRM 51-40-02 AND DWG # 141A5600 REV: N.<BR>SEE INDIVIDUAL SIGNS-OFF BELOW;[04] REPLACED FLOOR BEAM INTERCOSTAL LOCATED BETWEEN STA 277 TO STA 294.5 AND WL208.1 AND LBL 12 AT FWD GALLEY AREA IAW B737-700 SRM 51-40-02 AND DWG # 141A5600 REV: N. <BR>SEE INDIVIDUAL SIGNS-OFF BELOW AS RII

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