Helicopter Crash in Maranhão Results in Single Fatality

Casualties unknown • IMPERATRIZ, MA, BR

A Robinson RH-44 crashed during an unauthorized landing on irregular terrain in Imperatriz, Brazil, resulting in the death of the pilot.

What happened

On September 30, 2010, a Robinson RH-44 helicopter, registration PR-CCO, departed from the Imperatriz aerodrome (SBIZ) for Davinópolis (SIME). Shortly after takeoff, the aircraft deviated from its filed flight plan. At approximately 11:37 UTC, the pilot attempted a landing on the grounds of the Cerâmica Bela Vista company.

Witnesses reported that the approach appeared normal and the aircraft showed no visible signs of technical distress. However, the landing site consisted of highly irregular terrain featuring deep furrows from previous agricultural activity. As the aircraft touched down, one of the skids sank into a furrow, causing the helicopter to tilt sharply to the left. This sudden movement caused the main rotor blade to strike the ground, leading to structural failure and the rupture of the fuel tank. The resulting impact and friction immediately ignited a fire, which consumed the aircraft. The pilot, who was the sole occupant, was unable to escape and died at the scene.

The investigation

CENIPA investigators examined the wreckage and interviewed witnesses and the pilot's family. The investigation focused on the deviation from the flight plan and the suitability of the landing site. While the pilot was fully qualified and held valid medical and technical certifications, investigators noted that the aircraft was being used for unauthorized commercial purposes, transporting a passenger for political campaigning. The investigation also reviewed the terrain conditions and the pilot's ability to react to the sudden tilt caused by the uneven ground.

Findings

  • The pilot was performing unauthorized commercial charter operations despite holding only a Private Pilot license.
  • The pilot failed to identify the irregular terrain features (furrows) prior to landing.
  • The landing on uncertified, uneven terrain caused the aircraft to tilt and the rotor blade to strike the ground.
  • The pilot likely lacked sufficient time or control authority to counteract the sudden lateral movement before the impact occurred.

Probable cause

The accident was caused by the pilot attempting to land on irregular, uncertified terrain, which led to a sudden tilt and subsequent main rotor strike.

Frequently asked questions

What happened in the 2010-09-30 aircraft accident near IMPERATRIZ, MA, BR?

A Robinson RH-44 crashed during an unauthorized landing on irregular terrain in Imperatriz, Brazil, resulting in the death of the pilot.

What aircraft was involved and where did it happen?

The accident on 2010-09-30 involved a aircraft, registration PRCCO, at IMPERATRIZ, MA, BR.

What was the probable cause of the accident?

The accident was caused by the pilot attempting to land on irregular, uncertified terrain, which led to a sudden tilt and subsequent main rotor strike.

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