# SDR VNAA20251015014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2025
- Submitted: October 15, 2025
- Operation: Air carrier
- Aircraft: [N640NN](https://openairdocs.org/aircraft/N640NN), registered now
- Make and model: Bombdr CL6002D15
- Aircraft serial: 15425
- Aircraft time: 13,927 hours, 14,570 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: MM67035655003
- 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/VNAA20251015014

## Discrepancy

CORROSION ON SILL BETWEEN FS1000 / FS1088 AND STGR17R.   CORROSION ON SILL BETWEEN FS1000 / FS1031 AND FS1051 / FS1088 STGR17R  WAS REMOVED PER CRJ-900 SRM 51-21-06-001-001-A01 AND EVALUATED WITHIN LIMITS PER CRJ-900 SRM 53-00-45-201-001-A01. AND SILL BETWEEN FS1031 / FS1051 WAS EVALUATED OUT LIMITS PER CRJ-900 SRM 53-00-45-201-001-A01 AND REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 AND SRM 51-41-02-001-001-A01.

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