# SDR SWAA2023051726336

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2023
- Submitted: May 17, 2023
- Operation: Air carrier
- Aircraft: [N958WN](https://openairdocs.org/aircraft/N958WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36673
- Aircraft time: 38,993 hours, 23,664 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Intercostal
- Condition: Cracked
- Location: Zn 200 Fus Top
- 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/SWAA2023051726336

## Discrepancy

FOUND CRACK ON INTERCOSTAL COMMON TO FASTENER HOLE AT BS 321 WL 208 LBL 44<[01] UPDATED MEASUREMENT FIELD;[02] UPDATED MEASUREMENT TABLE;[03] CERTIFY;[04] REMOVED INTERCOSTAL AT WL208 LBL44 BS 312-328; LOCATED AND DRILLED NEW INTERCOSTAL PN:141A5410U12. NEED OK TO INSTALL.;[05] CERTIFY;[06] VERIFIED CORRECTION ACTIONS 2;3;4 AND 5 AND OK TO INSTALL.;[07] INSTALLED NEW INTERCOSTAL BS312-328 LBL44 IAW SRM 51-40-02-0G-0 AND DWG #141A5400 REV:-;[08] CERTIFY;[09] VERIFIED CORRECTIVE ACTION 7 AND MEASUREMENT TABLE

---
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.