# SDR Y2PA20120910041

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2012
- Submitted: October 4, 2012
- Operation: Air carrier
- Aircraft: N205US
- Make and model: Doug DC-9-32F
- Registry model: [Doug DC-9-32F](https://openairdocs.org/model/douglas-dc-9-32f) (OpenAirDocs)
- Aircraft serial: 47690
- Aircraft time: 22,675 hours, 11,779 cycles
- Engine: Pwa JT8D9A
- Engine time: 61,002 hours, 59,604 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Blades
- Condition: Damaged
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, C, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Y2PA20120910041

## Discrepancy

CREW REPORTED AFTER DEPARTURE WHEN TRANSITIONING TO QUIET EPR POWER SETTING A SUDDEN LOUD AND EXTREME VIBRATION OCCURRED.  OBSERVED LOSS OF EPR, N1 & N2.  LT ENGINE WAS VERIFIED AS FAILING AND SOURCE OF VIBRATION WITH THROTTLE TO IDLE.  EMERGENCY DECLARED AND NR 1 ENGINE SHUTDOWN DUE TO WORSENING VIBRATION.   ACFT MADE A NORMAL LANDING WITHOUT INCIDENT.   ENGINE FOUND SEVERELY DAMAGED TURBINE BLADES.  NO DAMAGE FOUND TO INLET, FAN AND COMPRESSOR.  NR 1 ENGINE REPLACED.

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