# SDR SWIA202054906

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2020
- Submitted: January 4, 2021
- Operation: Air carrier
- Aircraft: [N787SK](https://openairdocs.org/aircraft/N787SK), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10288
- Aircraft time: 30,362 hours, 18,803 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA202054906

## Discrepancy

CORROSION ON BACK-UP SILL AT STGR 21L FROM FS 310.00 TO FS 333.00.  C-CHECK RO 12/28/2020.   BACK-UP SILL AT STRG 21L BETWEEN FS 310 & FS 333 WAS CORRODED AND OUT OF LIMITS.  REPLACED WITH NEW BACK-UP SILL PN: SH670-31822-1, IAW DWG, CRJ700 SRM.  COMPLIED WITH SKY CARD.

---
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.