Close proximity two GA small aircraft aircraft over non tower airport unicom CTAF.

Attributes
ACN	87385
Time
Date	198805
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : 3ck
State Reference	IL
Altitude	msl bound lower : 2300 msl bound upper : 2300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	other
Person 1
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 140 flight time total : 1910 flight time type : 20
ASRS Report	87385
Person 2
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 300 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

While getting 'check out' in an aircraft by a CFI, we overflew an uncontrolled airport and came within approximately 500' from a high fixed wing aircraft. The CFI spotted the aircraft before I did and initiated a climb for further sep. Although a collision was not imminent, we were closer to the other aircraft than I would have liked. Factors include our failure to announce the overflt on unicom and possibly a higher than published pattern altitude being flown by the other aircraft. He appeared to be downwind. Lessons learned: remain well clear (vertically and horizontally of uncontrolled airports). Announce intentions over unicom.

Original NASA ASRS Text

Title: CLOSE PROX TWO GA SMA ACFT OVER NON TWR ARPT UNICOM CTAF.

Narrative: WHILE GETTING 'CHK OUT' IN AN ACFT BY A CFI, WE OVERFLEW AN UNCONTROLLED ARPT AND CAME WITHIN APPROX 500' FROM A HIGH FIXED WING ACFT. THE CFI SPOTTED THE ACFT BEFORE I DID AND INITIATED A CLB FOR FURTHER SEP. ALTHOUGH A COLLISION WAS NOT IMMINENT, WE WERE CLOSER TO THE OTHER ACFT THAN I WOULD HAVE LIKED. FACTORS INCLUDE OUR FAILURE TO ANNOUNCE THE OVERFLT ON UNICOM AND POSSIBLY A HIGHER THAN PUBLISHED PATTERN ALT BEING FLOWN BY THE OTHER ACFT. HE APPEARED TO BE DOWNWIND. LESSONS LEARNED: REMAIN WELL CLR (VERTICALLY AND HORIZONTALLY OF UNCONTROLLED ARPTS). ANNOUNCE INTENTIONS OVER UNICOM.

Data retrieved from NASA's ASRS site as of August 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.