# SDR MALA020263

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2002
- Submitted: May 3, 2002
- Operation: Air carrier
- Aircraft: N422XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B422
- Engine: Ge CT79B
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Gearbox
- Condition: Failed
- Location: Rt Engine
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA020263

## Discrepancy

ON APPROACH OF FLIGHT 2753 RT ENGINE FLAMED OUT.  EMERGENCY DECLARED, LANDED WITHOUT INCIDENT.  WEATHER CLEAR.  THE ENGINE DID NOT FLAME OUT BUT WAS OPERATING NORMALLY.  A/C DID HAVE AN UNCOMMANDED AUTO COARSEN EVENT.  THE DATA INDICATES IT WAS NOT CAUSED BY THE AUTO COARSEN, BUT WAS MECHANICAL.  MAINTENANCE REPLACE PGB, RECOMMENDATION FOR PRECAUTION.  REPLACE OSG, REPLACE PCU, AND PROPELLERS FOR LIMITS PER DOWTY.

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