# SDR REXA2026090401772

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2026
- Submitted: September 4, 2026
- Operation: Air carrier
- Aircraft: [N810SK](https://openairdocs.org/aircraft/N810SK), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15093
- Aircraft time: 42,701 hours, 27,007 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Part number: SH670318913S
- Condition: Corroded
- 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/REXA2026090401772

## Discrepancy

STRINGER 21L CORRODED FWD OF BS 319.  REMOVED CORROSION FROM FS319 BETWEEN STR 21L AND STR 20L IAW SRM 51-21-06-001-001-A01. PERFORMED UT THICKNESS MEASUREMENTS OF REWORKED AREAS IAW NDTM PART 1, 51-20-004-270-A01, REV-37.  FOUND LOWEST REMAINING THICKNESS TO BE .028" OR GREATER. FS 319 ORIG. THICKNESS: 0.050", REMOVED: 0.022", REMAINING: 0.028" FOUND TO BE OUT OF LIMITS IAW SRM 53-21-23-101-001-A02. INSTALLED FASTENERS & ATTACH ANGLE AT BS 319 IAW SRM 51-42-06-001-001-A01. LOCATED & DRILLED NEW FRAME IAW SRM 51-40-11-001-001-A01. INSTALLED FRAME SECTION FS319 BETWEEN STR 18L AND STR 21L IAW CRJ900 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01.

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