# SDR DALA2023051803969

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2023
- Submitted: May 18, 2023
- Operation: Air carrier
- Aircraft: [N660DL](https://openairdocs.org/aircraft/N660DL), registered now
- Make and model: Boeing 757232
- Aircraft serial: 24422
- Aircraft time: 97,806 hours, 44,635 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023051803969

## Discrepancy

SHIP 660 SECONDARY IN REF. A NRC 00624: CORROSION ON THRESHOLD SUPPORT NP 146N8769-47 (2EAS) AND NP 143N8328-60 (2EAS) FROM STA. 1650 TO 1670 AT 4L LOWER SILL AREA. CORRECTIVE ACTION: SUMMARY OF NRC 00735: THRESHOLD SUPPORTS (4 EAS) WERE REPLACED PER B-757-200 SRM. (2768283)

---
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.