A Taiwan  Aviation Safety Council (ASC) report dated 2 July 2015 on TransAsia Airways Flight 235 confirmed that after the failure of one engine the pilot incorrectly shut down the other, working engine.

 

EDIT

 

Investigators released the following preliminary sequence of events.

• 10:51:13 — Crew receives take-off clearance
• 10:52:34 — Tower asks crew to contact Taipei Departure
• 10:52:38 — Right engine failure alert; master warning sounds for 3s
• 10:53:04 — Crew reduces power to the left engine
• 10:53:12–18 — Stall warning sounds
• 10:53:24 — Crew cuts power to the left engine
• 10:53:34 — Crew declares emergency: "Mayday, mayday, engine flameout"
• 10:54:09 — Crew calls for restarting the left engine multiple times
• 10:54:20 — Left engine is restarted
• 10:54:34 — Master warning sounds again
• 10:54:35 — An unidentified sound is heard
• 10:54:36 — Recordings end

In the heat of the moment they made a fatal mistake. This is a tragic reminder why Crew Resource Management and Aeronautical Decision Making are such huge components of required crew member training.