TAIPEI/SINGAPORE (Reuters) - The
pilot flying a TransAsia Airways <6702.TW> ATR mistakenly switched
off the plane's only working engine seconds before it crashed in
February, killing 43 people, Taiwan's Aviation Safety Council (ASC) said
in its latest report on Thursday.
The
ASC's report also showed that Captain Liao Jian-zong had failed
simulator training in May 2014, in part because he had insufficient
knowledge of how to deal with an engine flame-out on take-off.
There appeared to be confusion in the cockpit as the two captains tried to regain control of the plane after one engine lost power about three minutes into the doomed flight.
Liao reduced the throttle on the working engine but did not appear to realize his mistake until it was too late.
He tried to restart the
engines several times before a junior first officer in the cockpit said:
"Impact, impact, brace for impact."
Seconds
later the almost new ATR 72-600, which had 58 people on board, crashed
upside down into a shallow river in Taipei after it lurched between
buildings, clipping an overpass and a taxi.
Fifteen
people survived but all three pilots and 40 passengers and other crew
died in the second crash involving a TransAsia ATR plane in a year.
FAILED SIMULATOR TRAINING
The ASC report, which neither assigns responsibility nor suggests recommendations, paints a more detailed picture than a preliminary report released days after the crash.
Liao, a former air force pilot, began flying commercial aircraft in 2009 and joined TransAsia the following year. He was promoted to captain in August 2014 and joined the ATR 72-600 fleet in November.
He had a total of 4,914 flight hours on ATR 72 planes.
However,
the report showed that Liao failed the simulator check in May 2014 when
he was being evaluated for promotion. Assessors found he had a tendency
not to complete procedures and checks, and his "cockpit management and
flight planning" were also found wanting.However, he passed after a second simulator check on June 29 and 30 and was promoted to captain, although similar problems were detected during training from July 2-10 last year.
Instructors
commented that he was "prone to be nervous and may make oral errors
during the engine start procedure" and displayed a "lack of confidence",
the report shows.
After the crash, Taiwan's Civil Aeronautics Administration put TransAsia's ATR pilots through oral proficiency tests on how to handle an aircraft during engine failure.
All
but one of the pilots passed the tests, although some needed more than
one attempt. The lone failure was demoted in rank to vice captain from
captain.
TransAsia president Fred Wu told a media conference later on Thursday the airline would buy an ATR flight simulator, bring in outside experts to evaluate pilots, and launch a safety improvement program with Airbus .
ATR is a joint venture between Airbus and Alenia Aermacchi, a subsidiary of Italian aerospace firm Finmeccanica .
A draft of the final
report will be issued in November with the final report, which will
include the cause of the crash and recommendations, to be completed in
April 2016.
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