# SDR CALA2025060505293

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2025
- Submitted: June 5, 2025
- Operation: Air carrier
- Aircraft: [N36207](https://openairdocs.org/aircraft/N36207), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30579
- Aircraft time: 76,682 hours, 28,380 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 147A56503
- Condition: Corroded
- Location: Zone 200
- 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/CALA2025060505293

## Discrepancy

MAIN CABIN LAV SUPPORT INTERCOSTAL STA 947-967 LBL 25 CORRODED ON UPPER SURFACE   REMOVED AND EVALUATED CORROSION AND FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-51. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-800 SRM 51-40-02 SRM 53-70-51, BOEING DWG NO. 147A5650 REV:C BOEING DWG NO. 147A5660 REV:G ESFR COMPLETE REMOVED AND EVALUATED CORROSION AND FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-51. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-800 SRM 51-40-02 SRM 53-70-51, BOEING DWG NO. 147A3650 REV:C BOEING DWG NO. 147A5660 REV:G.

---
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.