Near midair collision between 2 small acfts on a clear day.

Attributes
ACN	526180
Time
Date	200109
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : vpz.airport
State Reference	IN
Altitude	msl single value : 2800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : egpf.tracon
Operator	general aviation : personal
Make Model Name	M-20 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Route In Use	approach : visual
Flight Plan	VFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Piper Single Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 16 flight time total : 550 flight time type : 400
ASRS Report	526180
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Independent Detector	other flight crewa
Miss Distance	horizontal : 150 vertical : 0
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Airspace Structure
Primary Problem	Environmental Factor

Narrative:

I was descending at about 200 FPM and at cruise speed when the other aircraft suddenly appeared at my flight level about my 2:00. I cranked hard right. The miss was close enough I heard his engine for 1 to 2 seconds. He made no turns or change in attitude of any kind. I believe we would have hit head on if I had not taken immediate action. I was monitoring vpz unicom and did not hear him in or leaving the pattern. I believe he was in ground clutter until we were at similar altitude. I am very familiar with the area and was looking all the way. Visibility was excellent. The other aircraft was a piper tri-pacer. I estimate our approach speed (convergence) at about 250 to 300 mph.

Original NASA ASRS Text

Title: NMAC BTWN 2 SMALL ACFTS ON A CLEAR DAY.

Narrative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

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.