Citation Flight Notes
July 19, 2002

Crew:  	Le Hardy, Martin, Poellot, Twohy, DeMott

183648	Takeoff

C	DHP  266/067
D	DHP  289/047

184830	Cirrus overhead, non-uniform density.
185500	Approaching C, FL250, in very thin cirrus. 2DC not operating yet.
185700	Turning toward D, FL250
190005	Into cloud, near west ground site. Only in cloud a short while. Very thin, tenuous. 
Pitot wing a little low.
190330	Back in cloud. No 2DC yet; HVPS working.
190450	Turn and climb to FL270.
190740	Heading 230, FL270.
191250	Back nto some cloud. 2DC working. Plates?
191430	Turn and climb
191600	Waiting for climb clearance, still at FL270.
191730	Heading 045, climbing, not in cloud.
191930	FL290, not in cloud.
192230	Passed over west site a short bit ago, not in cloud. Some cloud ahead, mostly off to 
our right.
192600	Turning
193000	Will go to west site and then set up a new track east-west from ground site to 30 nm 
east of site. At FL310 now.
193205	Thin cirrus.
193303	West site. Very thin cirrus.
193630	Photo of developing cell 50 miles ahead.
193720	In thin cirrus, FL310, heading 090.
194050	Top of new cell seems to be collapsing.
194325	Turning
194620	In turn, starting climb, getting into thick cirrus, possibly from new cell?
194810	Heading 270, FL330, in good cirrus
194920	Cirrus thinning
195350	FL330, not in cirrus
195540	Photo of 926 and contrail. Turn and climb. Another photo.
195940	Another contrail photo.
200145	Antoher photo. Heading 090, FL350. Cell has put up another push.
200200	Not in cloud. Cirrus ahead, a little at a higher altitude.
200800	Turn.

J	255/58
K	283/21
New line oriented NE-SW. FL350

201445	Turning to K
201920	Photo of WB
202050	Into fresh anvil, FL350, approaching K from the west.
202500	In anvil, FL350, heading 270.
202720	On line K-J, heading 240
202900	Out of cirrus, 23 miles to J, cell to our left. T =-47C. Very thin cirrus.
203810	2 photos of convection.
204050	J-K, FL350, unable to climb - ATC.
204430	Back into thicker cirrus.
204740	Light turbulence.
204845	Requested spiral descent at K. Unable - ATC.
205230	K-J, FL350. Near top of cirrus. ATC very busy.
205740	Almost out of cloud.
210300	Reversing near J, descending to FL330.
210620	Heading 065, FL330.
210715	In thicker cirrus, 26 nm from K.
211200	Noticed that we had a patch of greater IWC earlier on this leg.
211500	Out of cirrus.
211715	Descending to FL310
211815	K-J, heading 235.
212200	FL310, T= -37C.
212925	Descending to FL290, J-K
213245	In cirrus, FL290
213610	New cell along line, just south of K
213720	Getting darder outside, passing to the southeast of the new cell.
214005	Turning, near K
214225	Photo of new cell
214405	FL270, T= -26C, coming up to edge of cell, heading 240.
214725	Very light turbulence.
214715	Jump in concentration.
215530	Photo looking 030.
215730	Into fallout cirrus, FL250, T= -23C.
220430	Start spiral up from FL250.
220700	2DC images are roundish. Increase in IWC.
220842	2DC images have fingers. Light turbulence.
221300	Reducing bank angle, climbing through 32,500'
221500	On top at 33,500'.
221540	Photo (?)
221631	Back in cloud, 34,500'. Southwest side of top is higher.
221905	Photo of top. 2nd photo of adjacent top, FL350.
222100	RTB
222145	Back into cloud, heading 210, starting descent
222350	Out of cloud

224621	Land
4.2 hours


Summary:

1. On line C-D. Flew altitudes FL250, 270, 290, 310, in very thin, patchy aged cirrus.
2. Flew line from western ground site to 30 miles east at FL310, 330, 350 in cirrus.
3. Flew line J-K at FL350, 350, 350, 330, 310, 290, 270, 250. Cirrus thick at times. New 
cell developed near K.
4. Spiral up from FL250 to FL350 in cirrus near cell on line J-K. This cirrus was different 
from the rest sampled earlier on this flight.


Instrument Issues:

2DC was not working on the first flight leg from C-D. Otherwise OK.