Video: Helicopter falls apart during landing

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Video: Helicopter falls apart during landing

3News NZ

The damaged helicopter in Brazil's northern state of Para

The damaged helicopter in Brazil's northern state of Para

A rescue helicopter has disintegrated shortly after landing in Brazil.

The Regional Service for the Investigation and Prevention of Aeronautical Accidents is investigating the incident in an effort to understand why it occurred.

Amateur images taken by the Para Fire Department showed how the aircraft came apart while vigorously vibrating.

Officials believe the helicopter experienced what is known as ground resonance, a condition that happens when the aircraft's rotor is working while the helicopter is on the ground.

Four people that were travelling aboard the helicopter were injured.

3 News / APTN

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Comments

29/02/2012 4:14:10 a.m.

Bill wrote:

This is a result of what is termed ground resonance, which buts the main 3 rotor blades out of phase. It all started with the first time the skids touched the ground.. All the pilot needed to do was pull back into the air then try landing again.

24/02/2012 12:36:07 p.m.

JD wrote:

It's a Brazilian operated helicopter, it's just trying to do the macarena..

24/02/2012 11:49:41 a.m.

ThePlan wrote:

There appears to be an imbalance in the main rotor, as it slows it reaches a resonant frequency with the body of the craft. Each turn puts more energy into shaking the body of craft until the rotor has slows further so that it is no longer resonant and we the get the result see.