RobertL18C wrote:
@blancolirio usually produces a good dry summary, as in this case
He does, but he continues to get the altitude wrong for ADS-B Out. It is a pressure altitude and not an MSL altitude. The METAR quoted was 29.45 or about a 500 foot reduction when converted to MSL. So 1100 pressure altitude is actually closer to 600 MSL.
Peter wrote:
The deformation would depend very much on how much “flexibility” there was in the object collided with, and how much there is in the airframe.
The deceleration has a huge effect on the people on board, that is clear. However, the steel cage has more than once proven it’s worth. A really good friend of mine in the US survived her crash into the forest primarily due to the steel cage, other airplanes would have disintegrated. I know several others who lived because that cabin stayed intact with little if any deformation within the cage itself.
The one bit which will kill almost every time however is if there is a fire. thankfully that was not the case here.
@blancolirio usually produces a good dry summary, as in this case
My Group Jodel DR1050 crashed in 1999. The cockpit sears were undamaged. The seatbelts held the two occupants who had no obvious impact damage, but were dead with internal organs tearing loose. Said to have died instantly.
I find it amazing that the pylori had enough flexibility even at stall speed.
The deformation would depend very much on how much “flexibility” there was in the object collided with, and how much there is in the airframe.
If there was none, as in e.g. hitting solid concrete, then at say 100kt the G forces would have been huge, the cockpit would have been destroyed, but even if the cockpit was strong enough to not get deformed, the occupants would have died from internal injuries. One can calculate the G for say 100kt to zero in say 30cm (a reasonable deformation for the engine compartment given the engine is a solid lump) – I will leave it as an assignment to the class 
The documented survival record stands at 46g but he had proper straps.
I think these guys benefitted from a lot of flexibility in the pylon, and a lot of deformation ahead of the cockpit.
Mooney_Driver wrote:
Another example of the brutal forces those steel cage cabins can take.
This did spring to mind. The fact that the tail is concertinaed aft of the cabin section shows how tough it must be.
Worse than I thought… so lucky they are alive
He was IFR but had considerable problems.
Don‘t know for sure but the flight track on Flightradar24 does not look like an IFR flight. Maybe they picked it up for the approach.
An then they went off centerline to the left aprox 1.8 NM from threshold (if Flightradar is correct). Again, Flightradar does not show a stable approach at any time from FAP until the final phase.
Another example of the brutal forces those steel cage cabins can take.
