# SDR SWIA202163842

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2021
- Submitted: January 17, 2022
- Operation: Air carrier
- Aircraft: [N770SK](https://openairdocs.org/aircraft/N770SK), registered now
- Make and model: Cndair CL600*
- Aircraft serial: 10243
- Aircraft time: 41,520 hours, 26,661 cycles
- System (JASC): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- Part: None
- Condition: Corroded
- 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/SWIA202163842

## Discrepancy

*FS333.00-FS349.00 STGR 21L BACKUP SILL HAS EVIDENCE OF CORROSION (MARKED)    (C CHECK RO 1/16/2022)   REPLACED BACKUP SILL ON STGR21L BETWEEN FS333-349 WITH NEW BACKUP SILL REF CRJ-700 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01, DWG SH670-31810 REV Y. COMPLIED WITH TASK CARD 51-900-1002-SKY.

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