Citation Flight Notes
July 18, 2002

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

165043	Takeoff

A	DHP  257/045
B	DHP  319/019

170130	Climbing to A.
171100	Anvil cirrus. T = -21.9C, FL250
172600	Heading 035 toward convection.
173030	Photo of radar and 2 of target cloud. Target has blowoff above our level. T= -21.3C
173330	Mixed phase, mostly ice
173540	We'll climb to colder temps - looking for -35C
174434	Slight inversion at around 30,500', 290 mb.
174600	AT FL310, T= -35.2C, 287 mb
175000	Core penetration. Moderate turbulence.
175230	Will penetrate the edge on the way back.
175308	Into small turret on edge. T= -35.5C. Top at our level.
175530	Returning south, will select new target. 
180120	We'll penetrate a small turret at our level.
180130	In cloud.
180345	In edge of cloud
181100	Have reversed, climb to FL330, t= -41C, to repenetrate.
181228	In cloud, older.
181320	Out. Would like to reverse, but are unable to get clearance.
181900	Lining up to repenetrate at -41C, FL330.
181934	In cloud, T= -40.8C. Short encounter.
182130	Back in cloud, extended path with >1.0 g/m3 ice.
182500	Coming up on cloud, top not much above our level.
182615	Turning to go to new point. We will do a spiral down through anvil that the jP-3 has 
been studying. Maybe the Otter will find a new target.

Point:	DHP  259/043

183310	In cloud
183630	Waiting for clearance.
183710	Start spiral down, 750 fpm. Lots of small spheres, some big irregular crystals. Pitot nose, sideslip plugged.
184520	Occasional very light turbulence.
185400	FL230, in spiral descent. Cloud has been fairly uniform, T= -17C.
185700	Picking up some impacted ice on wing lead edges.
190130	Holding at FL190 for ATC.
190500	17,500', out of cloud
190742	End of spiral down. We'll spiral up to FL250 and go to the north for possible new 
opportunities.
191030	Will not spiral - have been given direct climb.
191055	Light turbulence. Going to Lee County VOR to hold for new plan.
192000	Photo of pileus. Will request FL310 (-35C)
193150	About to penetrate, -35C, good water(ice) content.
193433	Photo of tower we penetrated. Will climb to FL330 (-40C)
193849	In cloud, -40.5C. Will try -45C next.
194600	Lined up on tower - not much left at this altitude. In cloud from about 194619-194630.
194720	Will hit another turret at -45C. Nope, went over it.
195430	Lining up at -40C for edge of growing tower.

200000	RTB

203043	Land

3.7 hours


Summary:

1. Penetrated convective cell at -21C. Then another more vigorous core at -35C, followed by 
a sample at the edge of that core. Then sampled another cloud at -35C.
2. Repeatedly sampled a decaying cloud at -35C, -40C, -40C and -40C. Then another cloud at 
that temperature.
3. Did a spiral down in uniform anvil conditions from FL330 to FL160.
4. Sampled another cell at -35C, -40C and -45C. Then did one more at -40C.


Instrument Issues:

Had occasional plugging of pitot nose and sidelsip ports, possible the attack ports. This 
could affect wind calculations.