BE18 pilot avoids near midair collision departing uncontrolled airport.

Attributes
ACN	435256
Time
Date	199903
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : i20.airport
State Reference	OH
Altitude	agl single value : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	Other
Make Model Name	Twin Beech 18
Operating Under FAR Part	other : 105
Navigation In Use	other
Flight Phase	climbout : takeoff
Route In Use	departure : vfr
Flight Plan	None
Aircraft 2
Operator	other
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 1400 flight time type : 450
ASRS Report	435256
Person 2
Affiliation	government other
Function	flight crew : single pilot
Qualification	pilot : commercial
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Miss Distance	horizontal : 0 vertical : 40
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On taking off from greene county airport, I had a near miss with a highway patrol C172. This event occurred as a result of many factors. Our airport is very hard to see due to grass runways. He was patrolling a new part of the highway, not familiar with area. I was cleaning the airplane up for safe flight, and the aircraft came from right to left and was in my blind spot the whole time. I didn't see the aircraft until he was underneath and past me, so no corrective action was taken. I'm not sure he saw me.

Original NASA ASRS Text

Title: BE18 PLT AVOIDS NMAC DEPARTING UNCTLED ARPT.

Narrative: ON TAKING OFF FROM GREENE COUNTY ARPT, I HAD A NEAR MISS WITH A HWY PATROL C172. THIS EVENT OCCURRED AS A RESULT OF MANY FACTORS. OUR ARPT IS VERY HARD TO SEE DUE TO GRASS RWYS. HE WAS PATROLLING A NEW PART OF THE HWY, NOT FAMILIAR WITH AREA. I WAS CLEANING THE AIRPLANE UP FOR SAFE FLT, AND THE ACFT CAME FROM R TO L AND WAS IN MY BLIND SPOT THE WHOLE TIME. I DIDN'T SEE THE ACFT UNTIL HE WAS UNDERNEATH AND PAST ME, SO NO CORRECTIVE ACTION WAS TAKEN. I'M NOT SURE HE SAW ME.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.