MYTH BUSTING IN PROGRESS:
This is what Cooper relayed to the crew through Mucklow:
(1) Fly to Mexico City non-stop, if you can't make it then anywhere in Mexico.
(2) Fly with landing gear and flaps down
(3) Do not fly above 10,000 feet
(4) Fly with the lights out in the cabin
(5) Do not land in the US for fuel or any other reason.
(6) No one aft of the first Class Curtain
(7) After takeoff the stewardess will be allowed to the cockpit.
(
The rear door open and the stairs extended for takeoff.
Cooper did not request the flaps be set at 15 degrees.
Cooper never requested a speed.
Cooper never asked for the plane to speed up or slow down.
Cooper did not request flight updates from the crew at any time during the incident.
THE TIME LINE SHIFT
From re-reading the interviews and logs, the work going on here, the money (how and where it was found) and much thought on the subject, this is how the time line has shifted:
At 7:42 Cooper called to the cockpit and told them he could not get the stairs to open. The crew slowed the plane and the stairs opened a bit. (my thoughts here) So now Cooper is looking at the stairs twisting his head around like a dog hearing a high pitch noise trying to figure it out.
He soon gets it, "the stairs drop by gravity, if i walk out on them they drop, the further my weight gets out over the stairs, the lower they go." Having realized this Cooper finalizes whatever it is he needs to do and by 8:05 he is ready to go.
He now starts to slowly test out his theory by walking out a few feet on the stairs. As he does they drop a bit further, causing the opening in the rear of the craft to get larger. Because of this, the air pressure in the cabin starts to change. Rataczak sees the cabin pressure gauge oscillating at 8:10 to 8:12 and reports it to NWA flight ops.
For the next five to ten minutes Cooper gets it all figured out and jumps, creating the "bump" 5 to 10 minutes after the last contact at 8:05.
The oscillations and bump are two different events confused as one by the agents conducting interviews. This confusion led investigators to believe the 8:11 report by Rataczak was the jump.