Accident
Investigation Bureau on Saturday, released reports of the air crashes
involving Bellview Airlines, Aviation Development Company, and six other
aircraft operators.
The report came over six years after the Bellview and ADC crashes led to the death of 213 people in 2005 and 2006 respectively.
The six other minor crashes captured in the report involved DHL, Aerocontractor, Bristow Helicopters and Tampico Club planes.
In October 22, 2005, Bellview’s Boeing 737 airliner with 117 people
on board crashed and caught fire shortly after take-off from Lagos,
killing all the people on board. The plane crashed in Lisa Village, Ogun
State.
On October 29, 2006, the Sokoto-bound ADC’s Boeing 737-200 plane
crash-landed a few minutes after take-off at Abuja airport, killing the
Sultan of Sokoto, Alhaji Muhammadu Maccido, and 95 other people. There
were only nine survivors out of 105 people on board the plane.
The AIB 68-page report on Bellview crash noted that the investigators could not recover the flight data recorder and cockpit voice recorder from the wreckage of the Bellview crash.
Consequently, AIB said it could not use conclusive evidence to
explain the cause of the accident involving Bellview Flight 210 after an
extensive investigation.
The report said the Bellview ill-fated plane was defective and, as such, should not have been released to fly.
The AIB report also blamed the Nigerian Civil Aviation Authority,
then headed by one Mr. Felix Onyeyiri, for not providing adequate safety
oversight.
According to the report, the training of the pilot-in-command before taking command of the Boeing 737 aircraft was inadequate.
Also, it stated that the cumulative flight hours of the pilot in the
days before the accident showed that excessive workload could have led
to fatigue.
However, AIB said the absence of forensic evidence prevented the
determination of the captain’s medical condition at the time of the
accident.
The report said, “Investigations revealed that the airplane had
technical defects. The airplane should not have been dispatched for
either the accident flight or earlier flights.
“AIB examined the contents of the technical logbook from the period the airplane came back from the ‘C’ check (maintenance).
The examination revealed multiple defects on the airplane that were not
properly attended to. The technical logbook did not provide information
concerning the effectiveness of each action taken against the
associated defects.”
The report also said maintenance engineers decided that the aircraft could be released for operation with the fault.
“There were some differences in the simulator report submitted by the
co-pilot to NCAA compared with the one obtained directly from the
institution. Records to determine the first officer’s actual crew
flight, duty and rest times were not available,” it stated.
The AIB’s 97-page report on ADC said pilot error and lack of airline
policy on how to operate a flight during adverse weather condition “were
causal and contributory factors that led to the crash.”
The report said, “Causal factors: The pilot’s decision to take-off in
known adverse weather conditions and failure to execute the proper wind
shear recovery procedure resulted in operating the aircraft outside the
safe flight regime, causing the aircraft to stall very close to the
ground from which recovery was not possible.
“Contributory factors: Inability of the flight crew to apply
wind shear recovery procedures and the use of inappropriate equipment
for wind shear recovery procedure during simulator recurrrecncy.
“The coordination of responsibilities between the pilot-flying and
pilot not flying during their encounter with adverse weather situation
was inconsistent with Standard Operating Procedures for the duties of
the pilot-flying and pilot not flying resulting in the inadequate
control of the aircraft.
The AIB report which gave the details
of the last hours and minutes of the flight said ill-fated ADC aircraft
took off from Calabar on Sunday morning of October 29 and landed in
Lagos.
It then proceeded to Abuja where it landed at 1020hrs.
According to the report, there was adverse weather at and around
Abuja airport at the time the aircraft departed for Sokoto with 105
persons on board comprising two cockpit crew, three cabin crew and 100
passengers.
It said soon after the aircraft was airborne, several warning
signals/sounds of “Wind shear” were recorded by the Cockpit Voice
Recorder.
In addition, the CVR recorded several “terrain, terrain….pull up,
pull up” sounds from the Ground Proximity Warning System as the aircraft
was losing altitude.
In the process of recovery, the aircraft was operated outside the
‘safe flight envelope,’ which resulted in a stall close to the ground
and crashed, the AIB report said.
The report noted that the decision to take off in known adverse weather condition lied with the captain of the flight.
AIB also pointed out that pilots of two other aircraft, namely Virgin
Nigeria and Trade Wings, awaiting take-off clearance from air traffic
controllers along with ADC, had decided to wait for the adverse weather
to subside.
Five safety recommendations were made by the bureau.
“NCAA should ensure that same instructor does not conduct any
training and at the same time be the check airman; NCAA should increase
the monitoring of the quality and content of flight crew trainings and
NCAA should ensure that the Nigerian Meteorological Agency expedites
actions on the completion of the on going installation of Low Level
Windshear Alert Systems at all airports to enhance the quality of
weather information obtained,” it stated.
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