# SDR SWAA2021060427307

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2020
- Submitted: June 4, 2021
- Operation: Air carrier
- Aircraft: [N8310C](https://openairdocs.org/aircraft/N8310C), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 38807
- Aircraft time: 27,014 hours, 11,809 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Bs 986
- 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/SWAA2021060427307

## Discrepancy

AFT WET AREA; TOP OF FLOOR STRUCTURE AT R/H STA 986; RBL 43; WL 208; HAS A FASTENER HOLE CORRODED. / BLENDED CORROSION AT TOP AND BOTTOM SURFACE OF FLOOR BEAM T-CAP AT RH STA 986; RBL 43; WL 208. ORIGINAL THICKNESS= .125' REMAINING =.098 LOSS OF .023'FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1 FIG 104 DET C; TRIMMED OUT DAMAGED AREA AND PERFORMED FLOOR BEAM UPPER CHORD T-CAP REPAIR ON SA-M 112 YA63390

---
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.