# SDR EE4Y2025090423046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2025
- Submitted: September 4, 2025
- 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: [N3159G](https://openairdocs.org/aircraft/N3159G), registered now
- Make and model: Boeing 737852
- Aircraft serial: 35119
- Aircraft time: 59,797 hours, 24,803 cycles
- System (JASC): [5410 · Nacelle/Pylon, Main Frame](https://openairdocs.org/jasc/5410)
- Part: Fan Cowl
- Part number: 314220018
- Part serial: 9112001
- Condition: Damaged
- Location: Zone 400
- 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/EE4Y2025090423046

## Discrepancy

DURING THE ACCOMPLISHMENT OF 737-70-812-02_P1-OP-UP-ENG NAC TASK CARD, IT WAS FOUND THE ENGINE #2, O/B FAN COWL P/N: 314-2200-18 BR, S/N: 9112001, WITH ELONGATED HOLES (2EA). COLLINS WAS CONTACTED ASKING FOR REPAIR INSTRUCTIONS AND FINAL APPROVAL. THE CONDITION REPORTED WAS REPAIRED IAW NAC ENGINEERING #737-71-0011 REV. IR DTD 08-18-2025 AND APPROVED UNDER 8110-3 SIGNED BY DER NUMBER 777331629. UNDER JOB A1Q187 NRI 4-37

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