# SDR AU990721

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Emb EMB-110P1
- Registry model: [EMB EMB-110P1](https://openairdocs.org/model/embraer-emb-110p1) (OpenAirDocs)
- Engine: Pwa PT6A34
- Propeller: Hartzl HCB3TN3
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 4A221301
- Condition: Corroded
- Location: Rt Wing
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU990721

## Discrepancy

(AUS) RIGHT WING INBOARD RIB CORRODED IN THE AREA BETWEEN THE FRONT AND REAR SPARS.  FOLLOWING REMOVAL OF THE RIB A SMALL AMOUNT OF INTERGRANULAR/FILIFORM CORROSION WAS FOUND ON THE REAR SPAR WEB UNDER THE STAINLESS STEEL SHIMS LOCATED BETWEEN THE RIB REAR FLANGE AND THE REAR SPAR RIB.

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