An angel at my pad (Keck hospital rooftop crash)
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Join Date: Apr 1998
Location: Mesopotamos
Posts: 1,434
An angel at my pad (Keck hospital rooftop crash)
Thankfully no injuries and the organ they were transporting was still useable.
Thankfully it didn't fall off the building.
Anyone know how it ended up on its side?
https://www.dailynews.com/2020/11/06...pital-helipad/
Thankfully it didn't fall off the building.
Anyone know how it ended up on its side?
https://www.dailynews.com/2020/11/06...pital-helipad/
Join Date: Sep 2017
Location: Canada
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Avoid imitations
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
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I'd agree that looks like a T/R drive failure at the most critical stage of the landing. Looks like a quick and correct response by the pilot, namely by lowering the collective, bearing in mind there was little or no time to shut down the engines. Quite interesting to see how rapidly it rolled!
Glad to hear they all survived.
Glad to hear they all survived.
Join Date: Jan 2006
Location: EU
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Originally Posted by ShyTorque
Quite interesting to see how rapidly it rolled!
Got it where it needed to be, all lived 👍
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Sure that this was a TR drive failure? I saw a longer video of the approach and the TR RPM didn't change during final and beginning of the rotation .
Originally Posted by golfbananajam
Is this the same heli type that crashed in Leicester two years ago and if so, could it be the same issue?
Join Date: Oct 1999
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Originally Posted by gulliBell
The initial slow rate of rotation at loss of directional control does not look like sudden TR drive failure to me.
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Originally Posted by noooby
Golly, you guys must be subject matter experts on the 109 Series TR Control system to be so sure of what happened.
One other “gotcha” on this type is that out of the two hydraulic systems, only #1 boosts the yaw servo. If #1 hydraulics drop off line, servo assistance is lost and the pedal feedback forces can be very high. It’s then very difficult to apply enough “boot” to keep the aircraft straight at low speed. The normal way to land in that condition is a running landing at about 30 kts, ideally with a crosswind from the left.
Join Date: May 2016
Location: Bangkok
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Originally Posted by ShyTorque
Having carried out a ‘Check A’ on the 109 every working day for the last decade and a half and having over 3,000 hours on type, I do have some idea of how the thing is put together.
One other “gotcha” on this type is that out of the two hydraulic systems, only #1 boosts the yaw servo. If #1 hydraulics drop off line, servo assistance is lost and the pedal feedback forces can be very high. It’s then very difficult to apply enough “boot” to keep the aircraft straight at low speed. The normal way to land in that condition is a running landing at about 30 kts, ideally with a crosswind from the left.
One other “gotcha” on this type is that out of the two hydraulic systems, only #1 boosts the yaw servo. If #1 hydraulics drop off line, servo assistance is lost and the pedal feedback forces can be very high. It’s then very difficult to apply enough “boot” to keep the aircraft straight at low speed. The normal way to land in that condition is a running landing at about 30 kts, ideally with a crosswind from the left.
