# SDR VNAA20250102026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2024
- Submitted: January 3, 2025
- Operation: Air carrier
- Aircraft: [N590NN](https://openairdocs.org/aircraft/N590NN), registered now
- Make and model: Bombdr CL6002D15
- Aircraft serial: 15393
- Aircraft time: 19,447 hours, 17,425 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Door Sill
- Part number: MM67035670003
- 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/VNAA20250102026

## Discrepancy

IN REFERENCE TO JOB TRFKE001P2A5:53-30-307-JIC/002: AFTER REMOVAL DOOR SILL, CORROSION ON AFT CHORD INNER AT SURROUND STRUCTURE AFT CARGO DOOR WAS FOUND.  EVALUATED, DUE TO DAMAGE IS NOT ALLOWED, AFT INNER CHORD PER CRJ-900 SRM 53-61-23-101-001-A01 AND AFT CHORD INNER AT SURROUND STRUCTURE AFT CARGO DOOR WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01.

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