# SDR R61A20100273

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2010
- Submitted: June 25, 2010
- Operation: Air carrier
- Aircraft: [N813MA](https://openairdocs.org/aircraft/N813MA), registered now
- Make and model: Emb ERJ 170-100SU
- Registry model: [EMB ERJ 170-100SU](https://openairdocs.org/model/embraer-erj-170-100su) (OpenAirDocs)
- Aircraft serial: 17000031
- Aircraft time: 16,437 hours, 10,912 cycles
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Stiffener
- Condition: Corroded
- Location: Nacelle
- 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/R61A20100273

## Discrepancy

WHILE AC WAS IN FOR HEAVY CHECK, LEVEL TWO CORROSION WAS FOUND UNDER RT NUMBER THREE PYLON ENGINE HEAT SHIELD ON THE INTERNAL STIFFENERS.  MAINTENANCE REMOVED AND REPLACED THE CORRODED INTERNAL STIFFENERS (P/N 170-39583-001 AND 170-39583-002) PER THE EMB SRM.  AC STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.

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