Wreckage, 'Black Box' Data Point to Fire Aboard EgyptAir Flight 804 -- Update
June 29 2016 - 9:18PM
Dow Jones News
By Andy Pasztor, Dahlia Kholaif and Robert Wall
Egyptian officials said Wednesday that evidence found in the
wreckage of EgyptAir Flight 804, which crashed last month, and data
retrieved from one of its "black boxes" show there may have been a
fire on the plane.
The flight data recorder contains information consistent with
fault warnings transmitted by the Airbus Group SE A320 that pointed
to smoke in one of the lavatories and the avionics bay located
under the cabin floor and behind the cockpit, where key electronics
are housed, Egyptian crash investigators said.
Wreckage recovered from the plane that crashed May 19, killing
all 66 people aboard, also showed signs of high temperature damage
and soot, they said.
By itself, the latest information doesn't indicate what may have
touched off a fire or specifically which onboard systems it could
have affected, according to independent air-safety experts
monitoring the probe.
But the findings offer the clearest evidence yet that a handful
of automated messages transmitted by the Airbus A320 pointing to
smoke or fire in the nose of the plane weren't erroneous.
The latest details also strongly suggest the pilots were dealing
with a combination of smoke and serious electrical malfunctions --
potentially involving various systems -- before the jetliner
started a sharp turn, continued a more shallow turn in the opposite
direction and then descended fairly rapidly.
The latest evidence points to a nearly simultaneous shut-off of
both the plane's flight-data recorder and an alerting system
designed to transmit malfunction messages to the ground. Those twin
events can't be intentionally commanded by pilots, according to
safety experts, and aren't part of any authorized emergency
procedures to respond to fire or smoke.
The upshot, according to these experts, is that the pilots may
have been struggling to cope with a significant electrical
malfunction, or possibly a cascading series of malfunctions, while
still at cruising altitude.
Widespread electrical problems, these experts said, most likely
would have made the aircraft harder to fly by shutting off certain
computerized flight-control aids. Under such circumstances, the
cockpit crew would have confronted the loss of certain built-in
safeguards intended to prevent aerodynamic stalls or other extreme
maneuvers.
Accident investigators still haven't determined why the plane,
flying from Paris to Cairo, crashed.
Investigators said they are still working to repair the cockpit
voice recorder, which was taken to France. French air-accident
investigators are aiding the Egyptian-led probe. Once the device is
repaired, it will be returned to Cairo for analysis. The cockpit
voice recorder could yield information about how pilots reacted to
the apparent smoke messages.
The flight-data recorder stores technical details from the
previous 25 hours of an aircraft's operations. The cockpit voice
recorder retains the last two hours of crew conversation.
Investigators also said information on the flight data recorder,
which was returned to Egypt on Tuesday after being repaired in
France, covers the flight until the recording suddenly stopped with
the plane at an altitude of 37,000 feet.
Egyptian officials said they would try to determine the source
of the apparent high-temperature damage.
Write to Andy Pasztor at andy.pasztor@wsj.com and Robert Wall at
robert.wall@wsj.com
(END) Dow Jones Newswires
June 29, 2016 21:03 ET (01:03 GMT)
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