# SDR SWAA2026051289443

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2026
- Submitted: May 12, 2026
- Operation: Air carrier
- Aircraft: [N8639B](https://openairdocs.org/aircraft/N8639B), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 60086
- Aircraft time: 39,504 hours, 19,287 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sidewall Support
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026051289443

## Discrepancy

CORROSION ON R/H FLOOR TO SIDEWALL SUPPORT AT: STA 727D+5; 727D+6. M727G+6; 727H+9; AND 727I TO 767; RBL 22; WL 156.   REMOVED AND REPLACED NEW A.C.B. FLOOR TO SIDEWALL SUPPORT P/N 146A7502-52 LOT# 1583396-1 AT BS727 - BS767 RBL22 WL156 PER SRM 51-40-02 AND DWG 146A7500 REV:-.

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