Mamonas Assassinas Accident: Cenipa reveals crucial factors for the aircraft crash

On the night of March 2, 1996, Brasil lost one of its greatest musical phenomena in a tragic plane crash. The Learjet that was transporting the Mamonas Assassinas from Brasília to Guarulhos, on the Grande São Paulo, collided with the Serra on the The conclusion of Centro of Investigação and Prevenção of

The report, completed just two months after the incident, highlighted crew exhaustion as a crucial element. Piloto and copilot, subjected to an intense and uninterrupted work routine, would be more susceptible to the stress of the flight, culminating in a state of inattention that compromised safety. The detailed analysis of these elements was essential to understand the complexity of the event.

The band members were on the aircraft – Dinho, Bento Hinoto, Júlio Rasec and the brothers Sérgio and Nenhum of the occupants survived the collision. The tragedy shook the country and deeply marked the collective memory, with the group’s memory remaining alive even after three decades.

The crew’s exhausting journey before the fatal flight

The trajectory of the Learjet, model LR-25D and registration PT-LSD, operated by Madri Táxi Aéreo, revealed an exhausting routine for the flight team. The day before the accident, the aircraft took the band from Caxias to Sul, to Rio Grande to Sul, to Piracicaba, in the interior of São Paulo, arriving at 3:45 pm. The crew only managed to arrive at the hotel at 5:45 pm, demonstrating the beginning of a long and uninterrupted journey.

On the fateful March 2nd, the program started early. The crew left the accommodation at around 6:40 am and took off at 7:10 am from Piracicaba, bound for Guarulhos. The aircraft landed at São Paulo airport at 7:36 am. Durante the waiting period at the aerodrome facilities, without access to a suitable place to rest, the pilot’s fatigue was notable, even expressing to a colleague that he felt “sand in his eyes”.

Delayed flight and the band’s last show

The next flight, bound for Brasília, was initially scheduled for 3pm, but was significantly delayed. Takeoff only took place at 4:41 pm, after more than an hour and a half of waiting. The aircraft landed at Aeroporto of

That same night, Mamonas Assassinas performed a memorable performance at the Mané Garrincha stadium, in Brasília, to an audience estimated at around 4 thousand people. The show ended the group’s only national tour, which was at the height of its career and popularity.

That would be the band’s last performance, which, in its brief but intense trajectory, won the hearts of millions of fans with its irreverent style and humorous lyrics. The event at Mané Garrincha represented the culmination of a cultural phenomenon that, unfortunately, would be interrupted just a few hours later.

Analysis of Cenipa: human and operational factors

The Cenipa investigation into the trajectory of the Learjet on March 2 showed that the crew faced approximately 17 hours of continuous work. Essa prolonged journey exceeded by approximately 6 hours the limit established by Lei of

The consequences of this exhaustion manifested themselves in gaps in communication with both the control tower and approach control, as well as failures in aircraft handling. Cenipa also highlighted that, despite the crew having valid Certificados and Capacidade Física and being healthy, the work pressure had a direct impact on operational safety.

One of the points raised by the report was the financial importance of the Mamonas Assassinas for the air taxi company and, consequently, for the aircraft pilot. Commander

The irreverence and popularity of the band members would have made it difficult to impose limits and safety rules during flights, as pointed out by Cenipa. The document also raised the hypothesis that one of the passengers remained in the cabin with the pilots in crucial phases of the flight, which could have contributed to an increase in the state of inattention. Além In addition, the discovery of some bodies without seat belts reinforced concerns about compliance with safety protocols on board.

Aspects of the flight path and in-depth investigation

Another detail that caught the attention of investigators was the flight path, which included an approach to the area where Dinho’s house was located, in the north of São Paulo. Cenipa inferred that this deviation may have been intentional, possibly with the intention of identifying the residence, a factor that adds complexity to the analysis of the events that preceded the collision. The investigation used several resources to reconstruct the facts.

The absence of a black box on aircraft Learjet required the investigation to rely on a robust set of alternative data. Foram analyzed radar records, detailed transcriptions of communications with Torre and Controle of Aproximação, a forensic phonetics report prepared by Universidade Estadual of Essas information was crucial in setting up the scenario of the final moments of the flight and the behavior of the crew.

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Based on the testimonies collected, the Cenipa report described the musical group as “quite restless and irreverent”. Essa characteristic, added to the possible pressure to relax rules during the flight, may have influenced the cabin environment, diverting the crew’s focus from essential procedures. The combination of these factors contributed to a scenario of vulnerability that culminated in the tragedy.

Deficiencies in pilot training and experience

Although the pilots held valid licenses and technical certificates, the investigation identified significant gaps in their training and experience, compromising flight safety. The commander, head of the Madri Táxi Aéreo pilots, logged 2,500 flight hours, of which only 220 were in the Learjet model. The copilot, aged 24, had a total of 330 hours of flight time and even more limited experience in the Learjet, totaling only 57 hours, and was in the training phase.

The copilot’s lack of experience in this type of equipment was pointed out as a factor that hindered effective communication with the Torre and the Controle. Essa deficiency limited his ability to provide adequate assistance to the commander or to correct any errors during the most critical phases of the operation, increasing the risks involved. The lack of more robust preparation for both professionals proved to be a critical point in the process.

Furthermore, the investigation detailed other flaws in the crew’s training and training structure, which contributed to the accident scenario:

• Lack of instruction from Gerenciamento to Recursos to Cabine (CRM), essential for coordination and conflict resolution in times of stress.
• Madri Táxi Aéreo did not have a training program approved by Departamento of Aviação Civil (DAC) – later replaced by Agência Nacional of
• The commander did not undergo complete initial training for the
• As recommended by the commander himself, there was no specific training for abnormal and emergency procedures, leaving the crew less prepared for critical situations.
• The pilot had already landed at Guarulhos, but never using the airport’s visual traffic circuit, which contributed to a navigation error during the attempt to go around to the left of the aerodrome.

The sum of these deficiencies, including the lack of formal training for cabin coordination, in-depth knowledge of emergency procedures and familiarization with airport-specific visual maneuvers, were highlighted by Cenipa as critical factors that directly contributed to the occurrence of the accident.

The final moments of the aircraft and the collision

The flight that took Mamonas Assassinas back to Guarulhos, the band’s hometown, initially went without significant abnormalities. However, upon approaching the destination, the crew established contact with the Controle São Paulo to receive the necessary guidance for the descent procedure on one of the runways of the Aeroporto of Guarulhos. The night was dark and the sky was covered by clouds, although the wind was light.

From the first contact with the Torre, a sequence of operational deviations and navigation failures began to manifest. The Learjet began the final approach to the Guarulhos runway, but was unable to stabilize properly. At the crucial moment when the aircraft was supposed to be configured for landing, it found itself deviating laterally to the left of the runway and flying at high speed, indicating a loss of control in the final phase of the maneuver.

Just seven seconds after Controle of Essa maneuver is generally performed in situations such as reduced visibility, strong wind or occupied runway. However, when opting for the go-around, the commander abandoned the instrument procedure, which was more appropriate for the conditions at that time and with which he was already familiar on previous flights to Guarulhos.

He reported being in flight condition and requested authorization to make a left turn at the airport. Torre of Controle, in turn, advised the flight to follow to the right, a safer direction for the region. Contudo, there was no time for correction. Quando the communication was made, the aircraft was already, at high speed, deviating to the left, towards the northern sector – an area characterized by rugged terrain and high altitudes, which presented considerable risks for a maneuver of that type.

The tragic outcome in Serra of Cantareira and developments

At 11:16 pm, the Learjet collided violently with the Serra of the Cantareira. The force of the impact was devastating: the aircraft tore through approximately 400 meters of forest, opening a clearing in the vegetation and being completely destroyed. Todos the occupants on board died at the scene of the accident. The scene was one of complete devastation and reinforced the gravity of the factors that led to the tragedy.

In the criminal sphere, Polícia Civil conducted an investigation that, initially, resulted in the indictment of the flight controllers who were on Torre for culpable homicide, that is, without intent to kill. However, the case was later filed by Justiça, which pointed out the lack of conclusive evidence against the controllers and concluded that the main error lay in the pilot’s handling of the aircraft. Essa decision consolidated the view that human and operational failure was preponderant.

Unforgettable legacy: 30 years of killer castor beans

Mamonas Assassinas, in their brief but brilliant trajectory, represented a true meteor in the history of Brazilian music and culture. The band lasted just over six months, released a single studio album and only carried out one large national tour. Contudo, the impact was immense and lasting.

In around 180 days, the group performed more than 150 shows, selling almost 2 million albums in less than a year, with 25 thousand copies sold in just 12 hours. Eles became a symbol of generations, winning over a legion of fans with their irreverent humor and musical talent. Dinho, Bento, Júlio, Sérgio and The band’s legacy continues to live on, playing on the radio, being mentioned on television and consolidated in the imagination and nostalgia of Brazilians, even three decades after the tragedy.