# SDR TRBA2009091SUP

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2009
- Submitted: October 21, 2009
- Operation: Air carrier
- Aircraft: N434AT
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 434
- Aircraft time: 26,304 hours, 28,753 cycles
- Engine: Pwa PW127
- Engine time: 25,603 hours, 27,255 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Failed
- Location: Zone 500
- Part time: 4,747 hours, 6,071 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, A
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2009091SUP

## Discrepancy

IN CRUISE NR 1 ENG HAD MULTIPLE DETONATIONS WITH FIRE STREAMING FROM TAILPIPE.  ENGINE TORQUE DROPPED FROM 80 PERCENT TQ TO 30 PERCENT TQ.  AFTER PL NR 1 WAS PULLED BACK DETONATIONS CONTINUED TO A TOTAL OF 5 OR 6.  ENGINE DID NOT SHUT DOWN.  REMOVED AND REPLACED LT ENGINE AS PER W/C EX-ATR-72-RAI-002.  OPERATIONAL AND LEAKS CHECKS FOUND SATISFACTORY.

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