# SDR REXA2026052700757

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2025
- Submitted: May 28, 2026
- Operation: Air carrier
- Aircraft: [N921XJ](https://openairdocs.org/aircraft/N921XJ), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15172
- Aircraft time: 38,778 hours, 27,736 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: MM67035301015
- Condition: Corroded
- Location: Zone 200
- 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/REXA2026052700757

## Discrepancy

CORROSION ON LONGITUDINAL BEAM UPPER FACE AT LBL 9.00. AND BTW FS=977.00 TO FS=1098.00 AT PAX CABIN AREA FS 977 BTW FS 1000 AND FS 1076 BTW FS 1098 WAS CLEANED PER CRJ900 SRM 51-26-00-001-001-A01 AND NOT COROSION WAS FOUND ALSO DUE TO EXCESSIVE CORROSION ON SECCION BEAM BTW LBL,9. FS 1000 BTW FS 1076 AND NO DAMAGE IS ALLOWED PER CRJ 900 SRM 53-61-43-101-001-A02 AND SECTION OF BEAM WAS REPAIRED PER SRM 53-00-41-201-001-A03

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