Investigators from the National Transportation Safety Board have recovered a cockpit voice recorder from the primary crash site where a Learjet collided with a busy roadway in South Florida last week, killing all nine people on board.
Is there a chance the electronic air defense system around MaraLogo Forced down the plane? If it changed altitude when entering that airspace and the systems didn’t recognize the plane as friendly?
No. Absolutely, unequivocally, no. You probably should even feel a little bad about fanning the flames of the next conspiracy theory for suggesting it.
I’ve looked into it a fair bit, the tldr is they flew in Florida during awful storms. They had icing and tried to get over the top of a really high storm. It’s a big no no in flying and sadly they crashed.
I have a friend that used to work in aviation doing retro fitting, they would say “all it takes to become a test pilot is to take the airplane past its defined limits” meaning that anywhere beyond those limits they don’t know how the aircraft will behave.
Going beyond the intended flight ceiling is a big no no because it changes a lot of other parameters like stall speeds and angles.
When you fly an airframe at higher than intended altitudes there is a shift in the actual force of air flowing over the wing.
Wings need airflow over the wing to generate lift, and you can induce a stall in enough airflow over the wing even going very fast, if high enough.
Worse, there are speed limits to the airframe design, and as you go higher the stall speed and the overspeed speed become closer and closer together. The way the jet was flown these parameters would have been within a few dozen KPH of another.
A bank or turbulence or small deviation could then easily push the aircraft into either limit and past it.
When this happens loss of control can occur due to buffeting or ovulations of the control surfaces in an overspeed event. An original stall at too high an altitude could cause a loss of altitude but increased speed at a high angle of attack, again creating overspeed conditions with nose down.
The result in either limit being exceeded results directly in a follow on overspeed that rips the rear of the airplane control surface off, making recovery and flight impossible.
This is a classic and well defined flight parameters problem.
as you go higher the stall speed and the overspeed speed become closer and closer together
fascinating!
it’s been a long time since I exercised my pilot cert so I’m very rusty with my aviation science, but I’d’ve guessed that lower air density meant less drag and less stress on the airframe, and I’d have assumed that the wings losing lift from too little air flow would correlate pretty closely with the forces that cause overspeed
how does it work that an airframe’s max rated airspeed doesn’t change at the same rate as a level flight stall speed?
according to Captain Steeeve (a recently retired military and airline pilot) over on youtube, this same plane experienced several minutes of extreme turbulence a year or so back: https://www.youtube.com/watch?v=YtA657zwqBI
the implication being that the airframe may have suffered enough stress from that extreme turbulence that it contributed to this crash, elevator separation feels like it would fit
Is there a chance the electronic air defense system around MaraLogo Forced down the plane? If it changed altitude when entering that airspace and the systems didn’t recognize the plane as friendly?
No. Absolutely, unequivocally, no. You probably should even feel a little bad about fanning the flames of the next conspiracy theory for suggesting it.
I’ve looked into it a fair bit, the tldr is they flew in Florida during awful storms. They had icing and tried to get over the top of a really high storm. It’s a big no no in flying and sadly they crashed.
I have a friend that used to work in aviation doing retro fitting, they would say “all it takes to become a test pilot is to take the airplane past its defined limits” meaning that anywhere beyond those limits they don’t know how the aircraft will behave.
Going beyond the intended flight ceiling is a big no no because it changes a lot of other parameters like stall speeds and angles.
I’m real curious to know what che deal is with the rear elevator ripping off though. Mechanical failure or failure due to massive forces bing applied.
When you fly an airframe at higher than intended altitudes there is a shift in the actual force of air flowing over the wing.
Wings need airflow over the wing to generate lift, and you can induce a stall in enough airflow over the wing even going very fast, if high enough.
Worse, there are speed limits to the airframe design, and as you go higher the stall speed and the overspeed speed become closer and closer together. The way the jet was flown these parameters would have been within a few dozen KPH of another.
A bank or turbulence or small deviation could then easily push the aircraft into either limit and past it.
When this happens loss of control can occur due to buffeting or ovulations of the control surfaces in an overspeed event. An original stall at too high an altitude could cause a loss of altitude but increased speed at a high angle of attack, again creating overspeed conditions with nose down.
The result in either limit being exceeded results directly in a follow on overspeed that rips the rear of the airplane control surface off, making recovery and flight impossible.
This is a classic and well defined flight parameters problem.
fascinating!
it’s been a long time since I exercised my pilot cert so I’m very rusty with my aviation science, but I’d’ve guessed that lower air density meant less drag and less stress on the airframe, and I’d have assumed that the wings losing lift from too little air flow would correlate pretty closely with the forces that cause overspeed
how does it work that an airframe’s max rated airspeed doesn’t change at the same rate as a level flight stall speed?
entirely conjecture at this point, but:
according to Captain Steeeve (a recently retired military and airline pilot) over on youtube, this same plane experienced several minutes of extreme turbulence a year or so back: https://www.youtube.com/watch?v=YtA657zwqBI
the implication being that the airframe may have suffered enough stress from that extreme turbulence that it contributed to this crash, elevator separation feels like it would fit
Over-speed. She said as much on the radio.
(Edit: things fall off airplanes when hey go too fast)
Yep it’s a key piece
No. It was icing.
No it was Dave Chapelle, he was out testing his new paraglider and his parrot pet was there with him and it flew into the jet engines of the plane.