# SDR QMLD201112054591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2011
- Submitted: December 6, 2011
- Operation: Air carrier
- Aircraft: [N551AM](https://openairdocs.org/aircraft/N551AM), registered now
- Make and model: Snias AS350B3
- Aircraft serial: 4311
- Aircraft time: 2,326 hours, 5,100 cycles
- Engine: Tmeca ARRIEL2B1
- Engine time: 2,590 hours, 5,392 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Guide Vane
- Part number: 0292517060
- Condition: Cracked
- Location: Module 3
- Part time: 2,590 hours, 5,392 cycles
- Component: Module 3, Tmeca, ARRIEL2B1
- Component part number: 70BM032020
- Stage of operation: IN
- How discovered: W
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLD201112054591

## Discrepancy

WHILE DISASSEMBLING ENGINE TO PERFORM MODIFICATION TU 166 FOUND THE POWER TURBINE NOZZLE GUIDE VANE CRACKED.  MODULE 3 MUST BE RETURNED TO MFG FOR REPAIR.

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