# SDR C2XA09CL047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2009
- Submitted: April 21, 2009
- Operation: Air carrier
- Aircraft: N12921
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145354
- Aircraft time: 20,171 hours, 15,380 cycles
- Engine: Rroyce AE3007A1P
- Engine time: 18,587 hours, 14,146 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Wheel
- Part number: 23069438
- Part serial: MM183630
- Condition: Cracked
- Location: Nr 2 Engine
- Part time: 18,587 hours, 14,146 cycles
- Stage of operation: IN
- How discovered: U
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/C2XA09CL047

## Discrepancy

DURING COMPLIANCE OF SB AE3007A-72-368 ON THE NR 2 ENGINE A CRACK INDICATION OF THE 2ND STAGE HIGH PRESSURE TURBINE WHEEL WAS FOUND WHILE PERFORMING THE ULTRASOUND INSPECTION.  THE NR 2 ENGINE WAS REPLACED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.