(Lamia flight 2933 is ready to take off,from Air Crash Investigation)

LaMia flight 2933, an Avro RJ85, was destroyed after impacting a wooded hillside south of Rionegro/Medellín Airport, Colombia. The aircraft carried the Brazilian Chapecoense football team for a match to Medellin.
Six of the 77 occupants have survived the accident. One flight attendant and four passengers survived with serious injuries and one passenger sustained minor injuries.
The initial plans were for LaMia to fly the Brazilian Chapecoense football team from São Paulo, Brazil to Medellin for the first leg of the 2016 Copa Sudamericana Finals against Atlético Nacional.
Probable causes:
Inappropriate planning and flight execution because the amount of fuel required to fly from the airport of destination to an alternate airport nor a quantity of reserve fuel nor the contingency fuel nor the minimum fuel of landing were taken into account, these fuel quantities are required by aeronautical regulations for carrying out this type of international flight like the one made by CP 2339 aircraft.
Sequential shutdown of the four (4) engines while the aircraft was in descent performing a holding pattern at GEMLI as a result of the exhaustion of fuel on board.
An inadequate decision-making process by the aircraft operating company management as a result of a lack of operational safety assurance.
Loss of situational awareness and mistaken decision- making process by the crew who insisted on continuing a flight with an extremely limited amount of fuel. The crew was aware of the low level of remaining fuel; however, the crew members did not take the corrective actions required to land at an aerodrome and refuel, fact that would allow them to continue the flight safely.
Contributing Factors:
Premature configuretion of the aircraft for landing during descent in holding pattern at GEMLI since considering the absence of thrust, this configuretion affected the plane's glide distance to Rionegro airport runway.
Latent deficiencies in the planning and execution of non-regular transportation flights by the aircraft operator related to insufficient supply of the required amount of fuel.
Specific deficiencies in the planning of the flight involved in the accident by the aircraft operator.
Lack of oversight and operational control of the flight by the Operator, it did not supervise the planning of the flight nor its execution nor it made a follow-up of the flight that would have allowed to support the crew in making decisions.
Absence of timely calls for "priority", or declaring an "emergency" or others by the aircraft crew members during the flight, and especially when fuel depletion was imminent in the descent phase and when performing a holding pattern which would have alerted air traffic services to provide the necessary support.
Organizational and operational noncompliance by the aircraft operator in the implementation of fuel management procedures, as it did not comply in practice with the approval of the Bolivian DGAC in the process of the company certification.
Delay in the approach of CP 2933 to Rionegro runway caused by its late priority request, and late emergency declaration for fuel added to heavy traffic at RNG VOR when on holding pattern.