# SDR COEA2021031707913

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2020
- Submitted: March 17, 2021
- Operation: Air carrier
- Aircraft: [N913FX](https://openairdocs.org/aircraft/N913FX), registered now
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft serial: 250
- Aircraft time: 28,217 hours, 36,924 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Part number: S57110584200
- Condition: Corroded
- Location: Lt Wing
- 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/COEA2021031707913

## Discrepancy

WO 223107 NR 903015 HEAVY CHECK COE/MAJOR REPAIR: WHILE PERFORMING PERMANENT REPAIR, ADDITIONAL LEVEL 2 CORROSION FOUND ON REAR SPAR UPPER CHORD BETWEEN RIBS 3L-4L OUTBOARD OF RIB 4L. CORRECTIVE ACTION: REPAIRED PER SRAS ES-0092053_01/19...14067 ISSUE B, DATED 3/4/2021.

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