# SDR EE4Y2026030924077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2026
- Submitted: March 9, 2026
- Operation: General aviation
- Filed by: [Cooperativa Autogestionaria de Servicios Aeroindus, repair station EE4Y151M](https://openairdocs.org/faa-repair-station/EE4Y151M/cooperativa-autogestionaria-de-servicios-aeroindus.md) (OpenAirDocs)
- Aircraft: N304JB
- Make and model: Emb ERJ 190-100 IGW
- Registry model: [EMB ERJ 190-100 IGW](https://openairdocs.org/model/embraer-erj-190-100-igw) (OpenAirDocs)
- Aircraft serial: 19000257
- Aircraft time: 39,175 hours, 26,111 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Corroded
- Location: Zone 500
- 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/EE4Y2026030924077

## Discrepancy

DURING A STRUCTURAL INSPECTION, CORROSION WAS FOUND AT A FASTENER HOLE LOCATED ON THE LH WINGLET LOWER SURFACE, AT THE SUPPORT STRUCTURE OF ACCESS PANEL 551AB, SEE FIGURE 1 FOR DAMAGE OVERVIEW. THE AFFECTED FASTENER HOLE INVOLVES BOTH THE WING SPAR II AND WINGLET RIB 1 FLANGES. ALL CORROSION WAS REMOVED BY REAMING THE FASTENER HOLE (INCREASING ITS DIAMETER). AFTER REMOVAL, THE FINAL HOLE DIAMETER MEASURED 9.80 MM. THIS CONDITION REPORTEDWAS REPAIRED IAW ETD2026-190-001038 REV. A DTD JAN 29 2026 AND DOCUMENTED UNDER COOPESA EO COO-EO-2026-23831-R00. JOB A1Q328 ITEM 5-41

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