# SDR REXA2026052700758

- 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: Intercostal
- Part number: SH690371153
- 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/REXA2026052700758

## Discrepancy

CORROSION ON INTERCOSTAL OVER S26L BTW BS 865 - 913 AT INTERNAL FUSELAGE STRUCTURE. CORROSION ON INTERCOSTAL OVER S26L BTW BS 865 - 881 AT INTERNAL FUSELAGE STRUCTURE WAS REMOVED PER SRM 51-21-06-001-001-A01 AND EVALUATED ORIGINAL THICKNESS: 0.063 IN AND MINIMUM REMAINING THICKNESS IS 0.060 IN. THEREFORE IT'S WITHIN LIMITS IAW SRM 53-51-03-101-001-A02, INTERCOSTAL ON STGR 26L BTW FS= 881.00 TO FS897.00 WAS CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 AND NO CORROSION WAS FOUND AND INTERCOSTAL ON STGR 26L BTW FS= 897.00 TO FS=913.00 WAS EVALUATED OUT OFF LIMITS PER SRM 51-10-06-001-001-A01 AND REPLACE PER CRJ-900 SRM 51-42-21-001-001-A01 AND SRM 51-42-06-001-001-A01.

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