Ok, here are the new numbers....

KIAS..........172.9
KTAS..........197.6
KTGS.........176.8
MPH............199.0

Wind 225 degree's @ 30

Battleground to 23 miles DME 8:31 seconds
Canby Intersection 9:51 seconds

Note that the "estimated" location at 8:14 PM is a mile or two east of the Portland (Battleground) VORTAC.  And that the flight path in question is not direct but does a lot of wandering around which adds additional distance and time to the DME points we have been discussing.  The numbers we have above indicates that it is questionable if the airliner could have been at the 23 DME point (even at 8:22 PM) if it overflew the Portland VORTAC, much less pass a mile or so to its east and then have to fly back west to compensate for that.

The numbers in the above posts are about as good as they are going to get until more accurate information on the airliner's actual locations and times becomes available.  If that happy day ever arrives, the first thing to do is determine the ground speed for each segment possible.

Then in order to determine estimates of the actual cruise speed and wind direction and velocity, some assumptions will have to be made based on simple good judgment.

The information in the actual un-redacted transcripts will determine future steps in the analysis of the flight path.

I'm rather pleased with the numbers. it's telling me the system is functioning as one would hope a simulator would do. as I always state about X-Plane......It's as real as it gets!

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I'm rather pleased with the numbers. it's telling me the system is functioning as one would hope a simulator would do. as I always state about X-Plane......It's as real as it gets!

It works really well when you can keep the plane in the air.

Sadly, I think an NFL kicker has more airtime than you did 

My plane is back from Rome 

Information is from Citizen Sleuths website.....

The placard was recovered at the location shown in Figure 2 which is near Toutle, and 20 miles north of the Ariel Washington jump zone. This location is almost directly under the FBI flight path. Giving the placard a free fall time of nine minutes and a south west cross wind of 18 knots, then the plane would have to been 2.68 miles from where the placard was recovered and 2.6 miles west of V23 [6]. This distance is well within the official 8 mile width for the Victor airway and is 4 miles east of the theoretical Tena Bar flight path. This data places a constraint on the planes position approximately six minutes before the jump and suggests flight #305 was on the original FBI flight path.

Information is from Citizen Sleuths website.....

The placard was recovered at the location shown in Figure 2 which is near Toutle, and 20 miles north of the Ariel Washington jump zone. This location is almost directly under the FBI flight path. Giving the placard a free fall time of nine minutes and a south west cross wind of 18 knots, then the plane would have to been 2.68 miles from where the placard was recovered and 2.6 miles west of V23 [6]. This distance is well within the official 8 mile width for the Victor airway and is 4 miles east of the theoretical Tena Bar flight path. This data places a constraint on the planes position approximately six minutes before the jump and suggests flight #305 was on the original FBI flight path.

Shutter, I think the data you cited suggests that the airliner was NOT on the original FBI flight path contrary to the last sentence above.

Flying on the west side of V23 would make the red crosses line up....

I sent Tom an email about the photo. he replied that the plane was showing the wind drift, and wasn't related to the flight path.