# SDR CALA2018031200889

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2018
- Submitted: March 12, 2018
- Operation: Air carrier
- Aircraft: N568UA
- Make and model: Boeing 757222
- Aircraft serial: 26674
- Aircraft time: 81,729 hours, 27,521 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 141N517030
- Condition: Corroded
- Location: Fuselage
- 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/CALA2018031200889

## Discrepancy

MAIN CABIN FLOOR SUPPORT BETWEEN STA 324 AND STA 345 AT LBL 20 HAS CORROSION ON UPPER SURFACE. REMOVED CORROSION AT MAIN CABIN FLR SUPPORT BETWEEN STA 324 AND STA 345 AT LBL 20 L=2.00" W=2.00" D=.015", FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51 AD 51 DETAIL III. INSTALLED NEW FLR SUPPORT P/N 141N5170-30 PO SAG1850560 IAW SRM 51-40-02 PG 2 PARA 4.

---
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.