Takeoff (climb)

The accident occurred as a result of the inability of the aircraft to take off, affected by the tailwind and water puddles that covered part of the runway, which did not allow speed to build up, crashing into the ground. It is considered that the most likely cause of the accident was mismanagement by the crew, in the sense of failing to make adequate planning and analysis, coupled with overconfidence and lack of identification of hazardous conditions at that time of takeoff. Based on our [JIAAC] investigations, we can infer that there were several contributing causes for the occurrence of this accident. In this order, we can state the following:
- Adverse weather and tailwind conditions associated with the phenomenon.
- Incorrect management by the crew to use only the last third of the runway with the meteorological conditions prevailing at that time.
- Failure of the aerodrome administration to identify and correct poor drainage of the runway.
- Failure of the Autoridad Aeronáutica to monitor safety.
- Rejection by the crew of the concatenated form in which the factors involved in this event developed.
After all the analysis to different causes involved in this accident, we can point to as the main Causal Factor: Human Factor, due to the mismanagement by the flight crew upon takeoff in these conditions. Physical and Material factors included everything related to the prevailing weather conditions, road conditions and lack of services at the aerodrome by the authorities; all of them are considered Contributing Factors.

The pilot's failure to maintain aircraft control and secure the right engine during an emergency return to the airport after takeoff. Contributing to the accident was an in-flight fire of the right engine for undetermined reasons.

It appears that runway was not properly cleaned from snow prior to takeoff.

Failure of the left engine just after liftoff for unknown reasons.

The reason for the loss of engine power in flight, most likely, was a reduction in the filing of the gasoline due to clogging of fuel filters. The appearance, structure and nature of the impurities found in the fuel on the aircraft were not characteristic of impurities accumulated in the fuel supply system in normal operating conditions. The source of the impurities in aircraft fuel system could not be found.

The flight instructor’s decision to attempt a touch-and-go landing toward rising terrain and with a tailwind, resulting in an in-flight collision with terrain during takeoff.

The following factors were identified:
- Lack of available thrust which corresponded to the power of only two engines running during take off run,
- Lack of authorized maintenance of the aircraft,
- The uncoordinated crew actions in the critical situation (both pilots had previously flown as captains). The lack of coordination is confirmed by the braking trails left by the main landing gear at the end of RWY -02, based on FCOM instructions, and in case of rejected takeoff attempt, the crew had to set the throttles to idle, lower the nose gear to reach the runway and then use the propellers for braking (releasing them from the stops). Also, to reduce the roll and to maintain the direction they were to use the nose wheel steering and wheel brakes as well as emergency braking if needed. Actually the crew did neither of the above procedures, except using the main wheel brakes.

Engine failure for unknown reasons.