nikkie said:as far as i can recall during my time, the choppers are damn old already. servicing is not as first class as fixed wings aircraft. no load test/fracture checks for skids also, i also worry that rotor will fall apart one day. rappelling.. never that safe anyway.. heli insertion exercise, mis-comm and the chopper lift off before you can unrope yourself! up to you to imagine..
those who are/were commandos, you can shed some light on the possibilities?
i am not so sure about the load test for the skids but i believe there are checks done on the heli... i have rappelled from the UH-1H as well as the super puma.
Actually quite safe from what i remembered....
1)The safety pin was implemented to prevent accidental release of the LAD.
The ground despatcher has to comfirm that the rappellers have cleared the hot zone before telling the despatcher on board to release the ropes. For night training, light sticks were used to indicate the rappellers location, to allow easlier ID.
2) Heli flying off before you unhook yourself can happen but the chances are quite low as the ground despatcher have to give the clearance for the heli despatcher to release the ropes before the heli flies off. The heli do not fly with the ropes. the heli will drop the ropes and the collectors have to collect the ropes after the heli flies away for the next task.
In the event that you are really sway... You can always release the carabina attached to yr fig 8 torelease yourself from the ropes.
3) For the rotor blades to drop off....eh. quite difficult.. the pilot may find it too windy and decides to off the fan... :bsmilie:
4) The rappeller must also ensure that his brake hand never leaves his right hand... once that happens, he will freefall but the fig 8 will slow down his speed so that he can execute further actions. The down wash during 'Live task' allow makes it very difficult to judge the distance from ground.
We can do as many as 5 mock tasks but nothing compares to the real thing.