Sourya Airlines plane crash: Pilot’s weakness, takeoff taken without ‘V-speed’ calculation
लगानी न्यूज
Kathmandu. The report of the Accident Investigation Commission has concluded that there was negligence on the negligence of the pilot on the crashed 9N-AME-CRJ 200 callsign aircraft of Sourya Airlines.
In TAG_OPEN_div_54 its report submitted to the Ministry of Culture, Tourism and Civil Aviation on Friday, the Commission pointed out the shortcomings of pilots and airlines.
The ministr TAG_OPEN_div_52 y made public the final report through the website after the Commission submitted its report to Tourism Minister Badri Prasad Pandey. According to the report, 18 people were killed when a Sourya Airlines plane en route to Pokhara from Tribhuvan International Airport crashed near the runway on July 14. Pilot Manish Shakya survived the accident. The government had formed a commission of inquiry headed by former Director General of Civil Aviation Authority of Nepal (CAAN) Ratish Chandra Lal Suman.
According to the
report, the cause of the plane crash was not a technical problem but a pilot’s fault. During the take-off, the pilot raised the front of the plane (nose) too high, due to which the pitch rate increased and the speed of the plane decreased and the plane’s speed was reduced to ‘deep stall’. The pit rate is known as the height of the front of the ship.
In the case of deep stall, the front part of the ship is lifted too high and the wings are lifted, the flow of air stops and due to which the ship cannot reach altitude. According to the report, the plane climbed up straight at a high speed while taking off and the plane fell while taking it to deep stall.
According to the
report, the speed of the ship has also been miscalculated on the basis of a wrong ‘switchcard’. The weight of the ship was 18,500 kg. The ‘V-speed’ required to fly was wrongly mentioned in the speed card made for this purpose.
Speed card was found to be wrong and the speed card book was not even approved. The airline has not been able to identify the old cases of high pitch rate seen while flying and improve it. When the aircraft is carrying load with cargo, the speed taken during takeoff is calculated based on outside temperature, airport height, load and so on. Which is called ‘V-speed’. During this flight, it is seen that the aircraft took off without such calculations.
The plane has been grounded for 34 days before the crash. Within a minute of taking off, the right wing hit the ground for the first time, the report said.
As soon as the plane started the rotation process while taking off, the plane was unable to reach the required height and the wings initially touched the ground by tilting to the right. The plane crashed into the ground and burned with fire. After the start of the rotation, the ship seems to have reached a height of 50 feet above the ground level within 5 seconds.
It was a ‘ferry flight’. Again, a flight is the process of flying an aircraft for repair. According to the report, the operator has been seriously negligent in following the prevailing practices in planning, preparation and operation required for this purpose.
The provisions of the
operation manual and ground handling manual have also been found to be violated. The company has been found negligent in all the processes of cargo and baggage handling (weight, load, distribution and management).
According to the
maintenance manual, the aircraft’s preservation and service maintenance checks were carried out. There was no evidence of ship control system, structural, or power-plant failure prior to land contact. The weather was good at the time of the flight and the air was calm. According to the report, the operator has failed to comply with the provisions of the operation manual and land handling manual. “The equipment and materials loaded on the aircraft were neither weighed while being sent from the operator’s store nor before loading it on the aircraft.
Maintenance equipment and materials were also loaded into the cabin. The load was not protected by straps, tie-downs or nets. The loading was not adequately supervised,” the report said. According to the report, flammable liquids and other hazardous items were also found on the ship, where non-aircraft personnel and non-essential crew were present on the ship without considering the distribution of weights.
operator’s interpolated speedcard mentions incorrect speed for take-off. The operator was using the wrong speedcard on all its flights, and the crew had neither noticed nor reported the error. An unusually fast pitch rate of up to 8.6 degrees per second was calculated during the flight.
The
operator’s historical flight data showed that the airport’s emergency perimeter access gate (located near the crash site) was not serviceable during the airport emergency exercise and critical areas within its perimeter were not classified and stored in the surrounding areas. Removing goods from the crash site on the day of the incident and transporting them to The Sourya Airlines office, Sinamangal, is like tampering with evidence.
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