The black box of the Associated Airline aircraft which
crashed on Oct. 3 in Lagos Nigeria has revealed that, there appeared to
have been an argument between the Captain and the First Officer of the
Airline.
The readout of the black box ,also known as
Cockpit Voice Recorder, CVR, conducted by Nigeria’s Accident
Investigation Bureau, AIB, in its Abuja’s laboratory revealed that the
computer onboard the plane sent a warning message to the Captain, Yakubu
Abdulrahman, shortly before take-off but he ignored it.
The
First Officer then suggested to the pilot to abort take-off but Yakubu
Abdulrahman proceeded and took off“The First Officer asked if the
take-off should be aborted approximately 12 seconds after the ‘eight
knots’ callout,” said Captain Mukhtar Usman, Commissioner Accident
Investigation Bureau,AIB.
AIB said the pilot and the co-pilot discussed some concerns about the aircraft prior to departure.
“The
crew discussed some concerns about the aircraft prior to departure but
at this time we are not
prepared to elaborate on those concerns as there
remains a lot of work to do to complete on the CVR analysis in order to
determine the specific nature of the crew’s concerns,” said AIB Commissioner, Muktar Usman.
Usman
said approximately four seconds after engine power was advanced to
commence the take-off roll, the crew received an automated warning from
the onboard computer voice which consisted of three chimes followed by
“take-off flaps…take-off flaps.
“This is a configuration warning
that suggests that the flaps were not in correct position for take-off.
And there is some evidence that the crew may have chosen not to use the
flap for take-off,” Usman said.
“This warning continued throughout the take-off roll,” Usman added.
“Approximately three seconds after ‘power is set’ call, the First Officer noted that the aircraft was moving slowly.
“At
this time we can state that the Right engine appeared to be producing
considerably less thrust than the left engine. The left engine appeared
to be working normally,” Usman said.
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