# SDR C77A2020011210025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2019
- Submitted: January 12, 2020
- Operation: Air carrier
- Aircraft: [N202NN](https://openairdocs.org/aircraft/N202NN), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000467
- Aircraft time: 12,676 hours, 7,953 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Beam
- Part number: 17065669003
- 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/C77A2020011210025

## Discrepancy

THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH A PERMANENT REPAIR OF CORROSION DAMAGE DISCOVERED DURING BASIC CHECK AT EAMS ON THE AFT CABIN LH FLOOR BEAM (P/N 170-65669-003) AT FR87 IN THE AFT CABIN FLOOR STRUCTURE. THE BEAM WILL BE REPAIRED BY BLENDOUT AND DOUBLER INSTALLATION PER SRM PART II 53-23-10 REPAIR 01P. THE LH FLOOR BEAM IS NOT CLASSIFIED AS FATIGUE CRITICAL STRUCTURE (FCS), BUT IT IS CLASSIFIED AS PRIMARY STRUCTURE. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION OF PRIMARY STRUCTURE. SUPPLEMENTAL FOLLOW UP INSPECTIONS ARE NOT REQUIRED PER SRM PART II 53-23-10 REPAIR 01P.

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