# SDR DU4R2011023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2011
- Submitted: December 8, 2011
- Operation: Air carrier
- Filed by: [AAR Aircraft Services, LLC, repair station DU4R141M](https://openairdocs.org/faa-repair-station/DU4R141M/aar-aircraft-services-llc.md) (OpenAirDocs)
- Aircraft: N11641
- Make and model: Boeing 737524
- Aircraft serial: 28902
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Condition: Corroded
- Location: Bs 993
- 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/DU4R2011023

## Discrepancy

DURING SCHEDULED INSPECTION, FOUND CORROSION ON AFT CABIN FLOOR WEB STIFFENER AT BS 992.9, RBL 33-45.

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