Colombian Navy B-412 accident

[212man]

Anyone seen this?

X - Formerly Twitter

Very odd, no real attempt to depart and no real attempt to stop?

[Dave Gittins]

From a non helicopter pilot, looked like a rank amateur and insufficient power.

[nomorehelosforme]

Originally Posted by 212man

Anyone seen this? https://x.com/fl360aero/status/1917706353037942864

Very odd, no real attempt to depart and no real attempt to stop?

Agreed, if he had a problem why not put it down before getting over the water?

[sycamore]

Looks like the floats didn`t inflate either....

[OvertHawk]

Looks like they were perhaps making a ( poor) attempt at a ‘ cushion creep’ and failed to attain translational lift before their cushion disappeared? . Not examined the video that closely - is there any indication of where the wind was coming from?

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Originally Posted by OvertHawk

Looks like they were perhaps making a ( poor) attempt at a ‘ cushion creep’ and failed to attain translational lift before their cushion disappeared? . Not examined the video that closely - is there any indication of where the wind was coming from?

I was just about to post exactly that OH

Often pilots forget that the maximum power required during that transition is just before you reach ETL and are battling through the roll-up vortex.

[OvertHawk]

Another factor may have been that they were departing over a downward slope.

This can make staying low in the cushion more difficult as there can be a tendency to want to climb rather than descend to stay in the cushion. Note that they seem to maintain altitude rather than a constant height which would be required to stay in the cushion.

I'm guessing that by the time they realised it wasn't going to work the option of s safe reject was past and they were committed to the water.

I also would not be surprised if there turned out to be a tailwind component.

As for the comments about the floats not inflating - they won't inflate if they have not been armed. Perhaps they did not arm them because they considered that this was an overland departure rather than over water?

At least they all survived to tell the tale

[212man]

At least they all survived to tell the tale

One of the four died, according to reports. "Second Class Petty Officer Yordi Steven Carvajal Rodríguez died minutes later at the Mahates Hospital in Bolívar."

[OvertHawk]

I am sorry, indeed, to hear that! I obviously did not read the news article thoroughly enough - my apologies.

[212man]

Originally Posted by OvertHawk

I am sorry, indeed, to hear that! I obviously did not read the news article thoroughly enough - my apologies.

a totally needless death, if ever there was one.

[wrench1]

Originally Posted by OvertHawk

Looks like they were perhaps making a ( poor) attempt at a ‘ cushion creep’ and failed to attain translational lift before their cushion disappeared? .

Could also have been at or above MGW considering the news articles stated they were on a supply run to other units in the region. Unfortunately, from my time in SA have seen similar takeoffs in 212/412s for similar reasons with some even "bouncing" off the ground until they could get the blades fly. Perhaps once the ground dropped off to the lake/pond so did the ground effect? As to the floats not popping, I doubt they were armed given their location.

[skadi]

Originally Posted by wrench1

with some even "bouncing" off the ground until they could get the blades fly.

In the second video it seems they touched the ground short after passing these white markings

skadi