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To: discostu









117 posted on 11/16/2001 1:18:47 PM PST by michigander
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To: michigander
Interesting, different pics from different angle, shows thing a little differently. Now it doesn't look so much like the break was below the logo, but you can see gap zones that look like they'd puzzle piece together with the fuselage pretty nicely.

Shows how difficult this is to do from a far. Thanks, flight path charts look pretty informative too.

119 posted on 11/16/2001 1:18:52 PM PST by discostu
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To: michigander

At 107 seconds after start of takeoff roll - airframe rattle.
At 114 seconds - comment about wake turbulence (speculation).
At 121 seconds - Second airframe rattle.
At 125 seconds - Call for "Max power.
At 127 seconds - Loss of control.
At 144 seconds - End of recording.

Assuming end-of-recording corresponds to impact, and not some other system failure, we can reference these CVR highlights to this radar track.

The first airframe rattle is 37 seconds prior to impact, or just about at the 09:15:30 mark -- the one that has the "Time (EST)" and "Altitude (feet)" legends attached.

The wake turbulence comment is about midway between that tick and the 09:15:45 mark.

The second airframe rattle is about at the 09:15:45 mark.

Calls for max power and comments on loss-of-control occur about where the track makes about a slight jog to the south, about 1.5 miles due north of IMPACT.

Another interesting piece of analysis: If we go upwind (11 kts from 320) from the point of the first rattle, we intersect the JAL 47 track at about it's 09:13:50 position, about 3/4 of a mile upwind, maybe 500 feet above, and about 100 seconds prior. For the wake turbulence (WT) to travel from that JAL postion to the AA position, it would have had to be moving about .75 nm/100 secs, or about 25 kts -- about twice what the surface winds were. (We really need to know what the winds aloft were.) Also, the WT would have been descending at about 300 ft/min.

162 posted on 11/16/2001 1:22:05 PM PST by MassLengthTime
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