# SDR REXA2025060900651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2025
- Submitted: June 9, 2025
- Operation: Air carrier
- Aircraft: [N935XJ](https://openairdocs.org/aircraft/N935XJ), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15199
- Aircraft time: 35,817 hours, 25,343 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: CC670340941
- 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/REXA2025060900651

## Discrepancy

CORROSION FOUND ON FS280 CROSSBEAM BETWEEN LBL 9 AND RBL 9. REMOVED CORROSION FROM UPPER FLANGE OF LH FS280 CROSSBEAM P/N CC670-34094-1 FROM BL 0 TO LBL 9 PER CRJ 900 SRM 51-21-06-001-001-A01. BLEND IS NOT WITHIN THE ALLOWABLE DAMAGE LIMITS SPECIFIED BY CRJ 900 SRM 53-00-00-101-001-A01 DUE TO 100% MATERIAL LOSS AT LBL 4.5 BLEND LOCATION. LOCATED AND DRILLED NEW FS 280.00 CROSSBEAM P/N:CC670-34094JP-1S IAW CRJ900 SRM 51-40-11-001-001-A01. INSTALLED NEW SERVICEABLE FLOOR BEAM P/N CC670-34094JP-1S  AT FS280 LH IAW CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01, AND SRM 51-42-22-001-001-A01.

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