# SDR SWAA2022031570429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2022
- Submitted: March 15, 2022
- Operation: Air carrier
- Aircraft: [N465WN](https://openairdocs.org/aircraft/N465WN), registered now
- Make and model: Boeing 737*
- Aircraft serial: 33829
- Aircraft time: 59,870 hours, 35,575 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Beam
- Condition: Corroded
- Location: Fwd Fuselage
- Stage of operation: UK
- 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/SWAA2022031570429

## Discrepancy

CORROSION ON LATERAL BEAM BS270 LBL4 WL207.5 / [01] REMOVED CORROSION ON LATERAL BEAM BS270; LBL4; WL 207.5; IAW SRM 51-10-02-0G-0; 1.640''X0.780''X0.020''DEEP; FOUND TO BE OUT OF LIMIT; IAW SRM 53-10-51-1A-1 PAR. 4.C.(2) FIG. 105;[02] CORRECTED: REMOVED CORROSION ON LATERAL BEAM BS270; LBL4; WL 207.5; IAW SRM 51-10-02-0G-0; 1.640''X0.780''X0.020''DEEP; FOUND TO BE OUT OF LIMIT; IAW SRM 53-10-51-1A-1 PAR. 4.C.(2) FIG. 105. TOOL USED: DEPTH GAGE ID ATS2472; NSN DUE 12/2022.;[03] VERIFIED CORRECTIVE ACTION ITEM 2.;[04] SUBMITTED TO ENGINEERING FOR REPAIR DISPOSITION.;[05] CORROSION ON LATERAL BEAM BS270 LBL4 WL207.5 WAS REPAIRED IAW EA M-21-153-00277;[06] VERIFIED CORRECTIVE ACTION #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.