# SDR SWIA2026012276050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2026
- Submitted: May 27, 2026
- Operation: Air carrier
- Aircraft: [N899SK](https://openairdocs.org/aircraft/N899SK), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15112
- Aircraft time: 36,294 hours, 29,486 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Structure
- Condition: Corroded
- Location: Zone 100
- 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/SWIA2026012276050

## Discrepancy

BACKUP, SILL, STRINGER 21L, BS 310 TO 333 HAS CORROSION.   REPLACED BACKUP, SILL STRINGER 21L, BS 310 TO 333 IAW SRM 51-42-06-001-001-A01 AND DWG SH670-31810, REV AE. COMPLIED WITH ALL STEPS OF TASK CARD, 51-900-1002-SKY. SEE CONTINUE CARD FOR DETAILS.

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