# SDR SWAA2023052430136

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2023
- Submitted: May 25, 2023
- Operation: Air carrier
- Aircraft: [N959WN](https://openairdocs.org/aircraft/N959WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36674
- Aircraft time: 38,285 hours, 23,370 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor Panel
- Condition: Cracked
- 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/SWAA2023052430136

## Discrepancy

AFT FLOOR PANEL 242XF TOP SURFACE IS CRACKED.<[01] IDENTIFIED PANEL MATERIAL IAW SRM 53-00-50-0I-1 FIG 6 TABLE 6.<BR>FOUND DAMAGE TO BE OUT OF ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.B.<BR>DAMAGE WILL BE REPAIRED IAW SRM 53-00-50-2R-6.<BR>REMOVED DAMAGED SKIN AND CORE; CLEANED REPAIR AREA; FABRICATED CORE PLUG USING BMS 8-124 C4 T5 G9 LOT#1287137 AND UPPER SURFACE REPAIR PLIES USING BMS 9-3H2 LOT#1522395-2 IAW SRM 53-00-50-2R-6 PARA 3.C-G(1).<BR>OK TO INSTALL.;;[06] CURED REPAIR WITH THERMOMETER ID:ATS2208 CAL DUE 10/2023; SANDED CORE PLUG CONTOUR TO SURFACE; CLEANED REPAIR AREA AND FABRICATED LOWER SURFACE REPAIR PLIES IAW SRM 53-00-50-2R-6 PARA 3.I(1)-K(1).<BR>OK TO INSTALL.;[07] INSPECTED AND VERIFIED CORRECTIVE ACTION 6. OKAY TO INSTALL LOWER SURFACE REPAIR PLIES.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[08] INSTALLED LOWER SURFACE PLIES USING BMS 8-201TY4 LOT#1524543-1; VACUUM BAGGED; LEAK CHECK GOOD WITH VACUUM GAUGE ID:ATS2441 CAL DUE 08/2023 IAW SRM 53-00-50-2R-6 PARA 3.K(1)-L(1).;[09] INSPECTED AND VERIFIED CORRECTIVE ACTION 8.;[10] CURED REPAIR PLIES USING THERMOMETER ID:ATS2208 CAL DUE 10/2023 ; UNBAGGED AND TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-6 PARA 3.M(1)

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