# SDR VNAA20251004007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2024
- Submitted: October 4, 2025
- Operation: Air carrier
- Aircraft: [N550NN](https://openairdocs.org/aircraft/N550NN), registered now
- Make and model: Bombdr CL6002D15
- Aircraft serial: 15323
- Aircraft time: 25,071 hours, 22,565 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: SH670320753
- 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/VNAA20251004007

## Discrepancy

CORROSION ON INTERCOSTALS (2 EAS) IN STA. FS= 349 TO FS= 364 BTWN STGR 26RH TO 26LH AT MAIN AVIONICS COMPARTMENT.  CORROSION ON INTERCOSTAL REMOVED PER CRJ-900 SRM  51-21-06-001-001-A01 AND EVALUATED WITHIN LIMITS PER CRJ-900 SRM  53-21-23-101-003-A02.  INTERCOSTAL IN STA. FS= 349 TO FS= 364 BTWN STGR 26RH AT MAIN AVIONICS COMPARTMENT WAS EVALUATED OUT OF LIMITS PER CRJ-900 SRM  53-21-23-101-003-A02 AND WAS REPLACED PER CRJ900 SRM SRM 51-42-06-001-001-A01  AND SRM 51-42-21-001-001-A01.

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