# SDR SWAA2022092765184

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2022
- Submitted: September 27, 2022
- Operation: Air carrier
- Aircraft: [N489WN](https://openairdocs.org/aircraft/N489WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33855
- Aircraft time: 57,460 hours, 34,246 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2022092765184

## Discrepancy

CORROSION ON INTERCOSTAL AT STA 312+8; LBL 45; WL 208. / [01] VERIFIED APPLICABILITY FOR SRM 53-10-51-1A-1<BR>REMOVED CORROSION FROM THE INTERCOSTAL OF THE FLOOR STRUCTURE AT STA 312+8 LBL 45 WL 208; WITH ORIGINAL THICKNESS 0.040' AND MEASUREMENTS OF THE REWORKED AREA L= 2.100' W= 1.200' D= 0.010' FOUND OUT OF LIMITS IAW SRM 53-10-51-1A-1<BR>TOOL: DIAL DEPTH GAUGE<BR>ID: ATS401<BR>S/N: UNKNOWN<BR>DATE: 10/2021<BR>DUE: 10/2022;[02] EDITED DAMAGE CHART;[03] VERIFIED CORRECTIVE ACTION 1.;[04] REMOVED AND REPLACED NEW INTERCOSTAL AT BS 312+8'; LBL 45; WL 208 IAW SRM 51-40-02 AND BOEING DWG 141A5400;[05] VERIFIED MEASUREMENT TABLE.;[06] VERIFIED CORRECTIVE ACTION 4.

---
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.