T-28 Pilot Report
Flight:
798
Date:
030516
Flight Time:
1.8
Pilot:
Tom Warner
Controller:
Andy Detwiler
Location:
Norman, OK (KOUN)
Mission:
Research
Computer Time |
Video Time |
Comments |
|
174142 |
Video start |
|
4741 |
Taxi |
|
5008 |
Time check: computer
-1 sec from video, video matches atomic clock time |
|
5654 |
Takeoff |
|
5900 |
Instruments on |
|
5939 |
FM on |
|
180030 |
FM off |
|
0153 |
Reboot due to no telemetry
data displayed at ops (file problem at ops) |
|
0353 |
Good reboot |
|
1446 |
High blower |
|
2340 |
010 / 19,000 MSL |
|
2436 |
In cloud / light to
moderate turbulence |
|
2515 |
Left turn to 300 |
182557 |
|
Flash |
|
3035 |
Coming out of cloud |
|
3103 |
Left turn to 150 |
|
3200 |
150 |
|
3308 |
Out of cloud |
|
3437 |
Begin descent to 14,000 -
16,000 (low blower) |
|
3736 |
070 / 15,500 |
|
3800 |
In cloud, light to moderate
turbulence |
3826 |
|
Flash |
|
3833 |
Heavy precip, some hail
possibly heard on hail mic |
3842 |
|
Abrupt shear (possibly
exited updraft) |
|
3910 |
Exit heavy precip |
3918 |
|
Close flash |
|
3942 |
Out of cloud / ¼ inch ice |
|
4043 |
120 / 15,000 |
|
4106 |
In cloud |
|
4220 |
Downdraft |
|
4251 |
Possible hail |
|
4235 |
125 |
4611 |
|
In cloud |
|
4800 |
2,500 foot per minute
updraft |
|
4824 |
Out of cloud (strong storm
at 12 o'clock) |
|
5312 |
In cloud |
|
5348 |
Strong updraft |
|
5424 |
Possible hail |
5434 |
|
Flash |
|
5502 |
Hail starts |
|
5510 |
Hail, strong updraft,
severe turbulence |
|
5535 |
Video plexiglass cracked |
|
5820 |
Reverse course with left
turn |
|
5940 |
Direct Norman with left
turn to 245 |
|
190020 |
Strong updraft |
|
0034 |
Severe turbulence |
|
0037 |
Heavy precip, possible hail |
|
0135 |
Hail |
|
0212 |
Strong turbulent bump |
|
0345 |
Out of cloud |
|
0546 |
RPM fluctuating +/- 100 |
|
0735 |
RPM fluctuating +/- 100 |
|
1008 |
RPM surge |
|
1020 |
Surge cleared, preceded for
a precautionary landing at Shawnee |
|
2211 |
Landing at Shawnee |
NOTES
Duane and Gary came out to
Shawnee. We determined that ice
ingestion into the carburetor caused the engine/RPM surge. Performed engine run and engine ran
normally. Took off and circled above
runway. Engine appeared normal, so preceded
back to Norman. The flight to Norman was
uneventful.
Weather
-
Line of storms
formed east of Norman on the east/northeast side of an upper level low and
later became severe
-
Storms went on to
produce tornadoes after T-28 penetrated the most southern storm.
-
3 to 4 close
lightning flashes
-
Last storm
penetrated was very strong.
o
Encountered
severe turbulence, strong updraft and heavy precipitation / hail
-
Surprising little
ice accumulation.
Maintenance
-
Oil temperature
climbed to approximately 100 C on climb out.
Decreased 20 - 30 C while in cloud.
-
Video outer
plexiglass cover cracked by hail at 185535
-
Padding on some
of the safety wires near the cylinder heads was eroded from hail as well as the
caulking around the hail sensor
-
Top heater
element of HVPS heavily eroded from precip/hail.
-
New metal melted
off of right elevator trailing edge from lightning strike
-
RPM and engine
surge apparently caused by ice/water ingestion into the carburetor
o
Charlie S.
recommends keeping carburetor heat on or applying carburetor heat if engine
surging encountered
Operations
-
Radio
communications were occasionally scratchy and unreadable from ops
-
Was able to
proceed independently during periods when radio communications were not
possible