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Old 01-26-2020, 09:14 PM   #1  
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Default Flight data/cockpit voice on Kobe crash

RIP to all the crash victims.

Was this helo operating under Part 135? What are the flight data recorder and CVR requirements?
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Old 01-26-2020, 09:23 PM   #2  
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RIP to all the crash victims.

Was this helo operating under Part 135? What are the flight data recorder and CVR requirements?
My understanding is in a previous life it was commercial. So maybe yes.
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Old 01-26-2020, 09:34 PM   #3  
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https://m.youtube.com/watch?v=xr46wb...ature=youtu.be
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Old 01-26-2020, 10:33 PM   #4  
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A CFIT accident it seems scud running VFR, I hate to speculate but by that last photo seems that way. RIP to everyone aboard.
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Old 01-27-2020, 01:10 AM   #5  
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A CFIT accident it seems scud running VFR, I hate to speculate but by that last photo seems that way. RIP to everyone aboard.


You sure? The last bit of data from the flight showed a vertical speed of -4,800+ with 161 kts


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Old 01-27-2020, 07:41 AM   #6  
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You sure? The last bit of data from the flight showed a vertical speed of -4,800+ with 161 kts


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I wouldn't consider instantaneous mode C data to be accurate, absent other info. It's not a designed to be an FDR.
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Old 01-27-2020, 10:03 AM   #7  
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You sure? The last bit of data from the flight showed a vertical speed of -4,800+ with 161 kts


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My helo knowledge is very limited, but I do know that a ‘retreating blade stall’ can occur after an abrupt pull up, especially when operating at high gross weight and high speed. The result of such, is loss of lift and a rolling motion to the left.

Could the pilot have suddenly realized his terrain situation, and initiated an abrupt pull up, and inadvertently stalled? This could account for the left turn and sudden altitude loss.

Another thought. Has this model of helicopter ever had an instance of the rotor disc contacting the tail boom, after an abrupt pull up?
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Old 01-27-2020, 10:35 AM   #8  
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My helo knowledge is very limited, but I do know that a ‘retreating blade stall’ can occur after an abrupt pull up, especially when operating at high gross weight and high speed. The result of such, is loss of lift and a rolling motion to the left.

Could the pilot have suddenly realized his terrain situation, and initiated an abrupt pull up, and inadvertently stalled? This could account for the left turn and sudden altitude loss.

Another thought. Has this model of helicopter ever had an instance of the rotor disc contacting the tail boom, after an abrupt pull up?
this is what I believe to have happened
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Old 01-28-2020, 06:15 AM   #9  
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this is what I believe to have happened
Guess we can send the NTSB home. Jeff has it all sorted out. Gotta be a record - not sure the fire from the crash is cold yet.
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Old 01-28-2020, 07:11 AM   #10  
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Nevermind. Had footage but don’t think it was the kobe crash
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