# SDR CALA2025090908652

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2025
- Submitted: September 9, 2025
- Operation: Air carrier
- Aircraft: [N57868](https://openairdocs.org/aircraft/N57868), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32590
- Aircraft time: 68,402 hours, 21,046 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 1517222614
- 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/CALA2025090908652

## Discrepancy

CORROSION AT AFT CARGO PIT FLOOR SUPPORT BS  1380 RBL 16 UNDER THE NUTPLATES.  REMOVED CORROSION ON FLOOR SUPPORT IAW  SRM 51-10-02;  ORIGINAL THICKNESS 0.063", MATERIAL LOSS 0.050" MATERIAL REMAINING 0.013",  FOUND OUT LIMITS IAW SRM 53-00-53-1A-1,  INSTALLED NEW FLOOR SUPPORT IAW SRM 51-40-02.

---
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.