# SDR SWAA2021122042001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2021
- Submitted: December 20, 2021
- Operation: Air carrier
- Aircraft: N409WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27896
- Aircraft time: 67,505 hours, 40,058 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Cracked
- Location: Cabin Floor
- 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/SWAA2021122042001

## Discrepancy

FWD CABIN WET AREA FLOOR SUPPORT INTERCOSTAL CRACKED BETWEEN STA 277 AND 295.5 ; BL-0 MKD DOT ; / [01] REMOVED INTERCOSTAL AT FWD WET AREA;BET.STA 277 TO STA 295.5;BL 0.PER B 737-700 SRM 51-40-02-0G-0.; [02] LOCATED AND DRILL NEW PART.PER B 737-700 SRM 51-10-02-0G-0; [03] VERIFIED STEP 1 AND 2. OK TO INSTALL NEW FLOOR SUPPORT INTERCOSTAL.; [04] UPDATED MEASUREMENTS.; [05] INSTALLED NEW INTERCOSTAL AT FWD WET AREA BETWEEN STA 277 AND STA 295.5 BL0 PER B737-700 SRM 51-40-02-0G-0.; [06] VERIFIED STEP 5.

---
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.