Pilot of C172 reports near midair collision at uncontrolled I73.

Attributes
ACN	722619
Time
Date	200612
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : i73.airport
State Reference	OH
Altitude	agl single value : 600
Environment
Flight Conditions	VMC IMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Baron 55/Cochise
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 25 flight time total : 916 flight time type : 846
ASRS Report	722619
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 300 vertical : 100
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

During upwind climb from runway 26 at I73; I observed a beech baron pass at 4 O'clock position low; approximately 100 ft below and within 300 ft of my C172. I immediately transmitted 'beech baron in vicinity of moraine; what are your intentions?' the pilot responded; 'I am entering downwind for landing runway 26.' I then asked; 'baron; did you observe the cessna on upwind?' the pilot responded; 'affirmative; had you in sight; thought you were high.' at this point I judged that I had encountered an insane individual. This person 'entered' a traffic pattern occupied by 2 C172's and a C140; operating a high-performance piston twin; at 500 ft AGL; on a heading of; roughly; 100 degrees; directly over the field. After completing my landing practice and being relatively new to this area; I sought the advice of a local pilot. He stated that a face-to-face confrontation with the operator of the baron would be fruitless as 'he pretty much just does whatever he feels like doing and a verbal confrontation would likely escalate to a physical one.'

Original NASA ASRS Text

Title: PLT OF C172 REPORTS NMAC AT UNCONTROLLED I73.

Narrative: DURING UPWIND CLB FROM RWY 26 AT I73; I OBSERVED A BEECH BARON PASS AT 4 O'CLOCK POS LOW; APPROX 100 FT BELOW AND WITHIN 300 FT OF MY C172. I IMMEDIATELY XMITTED 'BEECH BARON IN VICINITY OF MORAINE; WHAT ARE YOUR INTENTIONS?' THE PLT RESPONDED; 'I AM ENTERING DOWNWIND FOR LNDG RWY 26.' I THEN ASKED; 'BARON; DID YOU OBSERVE THE CESSNA ON UPWIND?' THE PLT RESPONDED; 'AFFIRMATIVE; HAD YOU IN SIGHT; THOUGHT YOU WERE HIGH.' AT THIS POINT I JUDGED THAT I HAD ENCOUNTERED AN INSANE INDIVIDUAL. THIS PERSON 'ENTERED' A TFC PATTERN OCCUPIED BY 2 C172'S AND A C140; OPERATING A HIGH-PERFORMANCE PISTON TWIN; AT 500 FT AGL; ON A HDG OF; ROUGHLY; 100 DEGS; DIRECTLY OVER THE FIELD. AFTER COMPLETING MY LNDG PRACTICE AND BEING RELATIVELY NEW TO THIS AREA; I SOUGHT THE ADVICE OF A LCL PLT. HE STATED THAT A FACE-TO-FACE CONFRONTATION WITH THE OPERATOR OF THE BARON WOULD BE FRUITLESS AS 'HE PRETTY MUCH JUST DOES WHATEVER HE FEELS LIKE DOING AND A VERBAL CONFRONTATION WOULD LIKELY ESCALATE TO A PHYSICAL ONE.'

Data retrieved from NASA's ASRS site as of January 2009 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.