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11 Facts We Know About The TransAsia GE235 Crash

Details are starting to emerge about the TransAsia GE235 crash. While it's too early to draw final conclusions about what happened, here's what we do know, based on Taiwan's ASC reporting of the Cockpit Voice Recorder and Flight Data Recorder.

1) 10:51Z: Takeoff

TransAsia received their takeoff clearance

2) 10:52:33Z: Departure

TransAsia was handed off to departure

3) 10:52:38Z: Master Warning

37 seconds after takeoff at approximately 1200 feet MSL, the master warning activated, related to a failure of the #2 engine (right engine)

4) 10:52:43Z: Left Engine

The #1 engine (left engine) was throttled back

5) 10:53:00Z: Discussion

The crew began to discuss the #1 engine had stalled.

6) 10:53:06Z: Auto-Feather

The #2 engine auto-feathered.

7) 10:53:12Z: Stall Warning

The first stall warning occurred and ceased 6 seconds later.

8) 10:53:19Z: Restart Attempt

The crew discussed the #1 engine had already feathered and the fuel supply had been cut. They decided to attempt a restart of the #1 engine.

9) 10:53:21Z: Stall Warning

Another stall warning activated.

10) 10:53:34Z: Mayday

The crew radioed 'Mayday'. Multiple restart attempts followed.

11) 10:54:34Z: Second Master Warning

A second master warning activated. 0.4 seconds later, both recorders stopped recording.

Engine Failure In A Multi-Engine Aircraft

A common problem students face in multi-engine training is correctly identifying which engine has failed. This is because when an engine fails, the engine instruments are usually still indicating some level of operation, and the engine still may be producing some power.

While we can't say this is what happened in the GE235 crash, it drives home the fact that when an engine failure happens in a multi-engine aircraft, it's incredibly important to move slowly and deliberately, and to verify with 100% certainty that the correct engine is being throttled back and shut down.


Colin Cutler

Colin is a Boldmethod co-founder, pilot and graphic artist. He's been a flight instructor at the University of North Dakota, an airline pilot on the CRJ-200, and has directed development of numerous commercial and military training systems. You can reach him at colin@boldmethod.com.

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