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Thanks, Shutter.

Georger also provided me with some information that he is privy to that puts the pressure bump AFTER the oscillations- perhaps several minutes after.

Bottom line is that the oscillations reported by the crew at around 8:11 ARE NOT the same event as the pressure bump which is assumed to be the time Cooper jump. Thus, one can conclude that Cooper likely jumped some time after 8:12. How long after is uncertain.

Chaucer, regardless of what Georger has told you, the pressure bump took place in connection with the oscillations.  There were probably several small oscillations if Cooper walked down the stairs a couple of steps from their pivot point to throw items such as the briefcase, bomb, etc., out of the aircraft.

But the biggest oscillation of all would occur when Cooper walked down to the bottom of the stairs and jumped.  The pressure bump would then be caused by the stairs slamming shut.  There is no evidence to suggest that the stairs slammed shut more than once.  And Cooper jumping from the bottom of the stairs would cause them to slam shut as plainly shown in the FBI sled tests.

In the You Tube documentary that Shutter has posted above, Rataczak plainly states that when the stairs slammed shut the crew experienced a "pressure bump" (Rataczak's term) in their ears.  There is nothing to suggest that there was a second pressure bump of any kind.  And based on all available evidence, that pressure bump was the result of Cooper jumping.

Georger is just blow smoke and apparently does not have any knowledge or understanding of aerodynamics or flight dynamics.   

Thank you, Robert, for your always clear responses. Nothing really mysterious about the oscillations and it doesn't change the estimate of when the pressure bump happened. One question regarding Victor 23: can we assume, as this is a route suitable for low-level flying, that this section of the PNW has considerable amounts of flat or at least less treacherous terrain? Wouldn't this also increase Cooper's chances of a safe landing, while not guaranteeing it? And wouldn't knowing this is the likely flight path mean that if Cooper were of a survivalist/orienteering ilk, he would only need to get to know that one section (however vast) of the route well, not the entire forested area between points A and B?

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Thanks, Shutter.

Georger also provided me with some information that he is privy to that puts the pressure bump AFTER the oscillations- perhaps several minutes after.

Bottom line is that the oscillations reported by the crew at around 8:11 ARE NOT the same event as the pressure bump which is assumed to be the time Cooper jump. Thus, one can conclude that Cooper likely jumped some time after 8:12. How long after is uncertain.

Chaucer, regardless of what Georger has told you, the pressure bump took place in connection with the oscillations.  There were probably several small oscillations if Cooper walked down the stairs a couple of steps from their pivot point to throw items such as the briefcase, bomb, etc., out of the aircraft.

But the biggest oscillation of all would occur when Cooper walked down to the bottom of the stairs and jumped.  The pressure bump would then be caused by the stairs slamming shut.  There is no evidence to suggest that the stairs slammed shut more than once.  And Cooper jumping from the bottom of the stairs would cause them to slam shut as plainly shown in the FBI sled tests.

In the You Tube documentary that Shutter has posted above, Rataczak plainly states that when the stairs slammed shut the crew experienced a "pressure bump" (Rataczak's term) in their ears.  There is nothing to suggest that there was a second pressure bump of any kind.  And based on all available evidence, that pressure bump was the result of Cooper jumping.

Georger is just blow smoke and apparently does not have any knowledge or understanding of aerodynamics or flight dynamics.   

Thank you, Robert, for your always clear responses. Nothing really mysterious about the oscillations and it doesn't change the estimate of when the pressure bump happened. One question regarding Victor 23: can we assume, as this is a route suitable for low-level flying, that this section of the PNW has considerable amounts of flat or at least less treacherous terrain? Wouldn't this also increase Cooper's chances of a safe landing, while not guaranteeing it? And wouldn't knowing this is the likely flight path mean that if Cooper were of a survivalist/orienteering ilk, he would only need to get to know that one section (however vast) of the route well, not the entire forested area between points A and B?

While the elevation of Portland International Airport is only 30 feet above sea level, the terrain between Portland and the Malay Intersection goes up to about 3500 to 4000 feet.  Judging from aviation maps, that area is quite hilly and probably heavily wooded for about the entire distance.

Even if Cooper jumped in that area, he wouldn't be able to pick out a landing spot since his parachute was not steerable and there is a good chance that he would land in a tree.  If he did land in a tree, he would probably abandon the parachute since getting canopies out of trees requires a lot of time and Cooper probably didn't have time to spare.  And that canopy in a tree would be highly visible to anyone flying over that area as Himmelsbach reportedly did the next day or second day.

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Nothing really mysterious about the oscillations and it doesn't change the estimate of when the pressure bump happened.

So, when did the pressure bump happen? In your estimation?

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If you are looking for an exact time for that pressure bump, then you are out of luck unless the FAA/FBI release more information.  In the meantime, the 8:11 or 8:12 PM PST time estimates is as good as anything that is available.

That doesn't make sense when you look at the available evidence and testimony. Rataczak makes note of where they believe he jumped on transcripts and actual words. if the FBI was aware of a secret or a different location they held back on the transcripts then why would they search in the wrong spot? the totality doesn't agree with the assumption. as for the timing. that would put him several minutes behind of landing on Tbar or in the area of Tbar.

Lets say they marked the spot. now, the FBI is aware and we are not...again, they looked in the wrong spot for no reason?