# SDR SWIA202161300

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2021
- Submitted: September 29, 2021
- Operation: Air carrier
- Aircraft: [N789SK](https://openairdocs.org/aircraft/N789SK), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10291
- Aircraft time: 31,339 hours, 19,189 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- 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/SWIA202161300

## Discrepancy

MAIN AVIONICS BAY STGR 21L BACK-UP SILL CORRODED BETWEEN FS310.00- FS333.00     (C-CHECK RO 9/27/2021)    BLENDED CORROSION ON F.S 310.00 TO 333.3  STGR 21 L BACK UP SILL, 100% MATERIAL LOSS. REMOVED AND INSTALLED NEW BACK-UP SILL ON STRG 21L BETWEEN F.S.310.00-F.S333.00 IAW CRJ700 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV AE, COMLPIED WITH SKYWEST TASK CARD 51-900-1002-SKY

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