C172 and PA28 have near midair collision in non-towered traffic pattern.

Attributes
ACN	796493
Time
Date	200807
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ekn.airport
State Reference	WV
Altitude	agl single value : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	VFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	VFR
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 60 flight time total : 380 flight time type : 320
ASRS Report	796493
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	conflict : nmac non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 0 vertical : 40
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was at elkins airport (ekn) with a primary student (post solo) practicing touch-and-goes (left traffic runway 32). I was on elkins CTAF and demonstrating proper uncontrolled field radio techniques. I was the only aircraft in the area (known; until the event). Runway 32 was in use; winds 330 degrees at 3 KTS; few clouds at 080. I was on downwind; from a previous touch-and-go; and my student said 'look; another plane.' I looked up and slightly to my left; and there was what appeared to be a piper cherokee approximately 40 ft vertically above and overtaking me. We appeared to be a few seconds away from a midair as I was at tpa and he appeared to be descending to tpa. At that point in time I took the flight controls to input evasive maneuvers. I performed a descending left 360 degree turn. I do not believe aircraft #2 saw me. Aircraft #2 was not using communications; nor did it appear he was monitoring. An aim recommended pattern entry was not utilized by aircraft #2 nor was FAA right-of-way regulations. It appeared to me aircraft #2 entered the traffic pattern directly into downwind.

Original NASA ASRS Text

Title: C172 AND PA28 HAVE NMAC IN NON-TOWERED TRAFFIC PATTERN.

Narrative: I WAS AT ELKINS ARPT (EKN) WITH A PRIMARY STUDENT (POST SOLO) PRACTICING TOUCH-AND-GOES (L TFC RWY 32). I WAS ON ELKINS CTAF AND DEMONSTRATING PROPER UNCTLED FIELD RADIO TECHNIQUES. I WAS THE ONLY ACFT IN THE AREA (KNOWN; UNTIL THE EVENT). RWY 32 WAS IN USE; WINDS 330 DEGS AT 3 KTS; FEW CLOUDS AT 080. I WAS ON DOWNWIND; FROM A PREVIOUS TOUCH-AND-GO; AND MY STUDENT SAID 'LOOK; ANOTHER PLANE.' I LOOKED UP AND SLIGHTLY TO MY L; AND THERE WAS WHAT APPEARED TO BE A PIPER CHEROKEE APPROX 40 FT VERTICALLY ABOVE AND OVERTAKING ME. WE APPEARED TO BE A FEW SECONDS AWAY FROM A MIDAIR AS I WAS AT TPA AND HE APPEARED TO BE DSNDING TO TPA. AT THAT POINT IN TIME I TOOK THE FLT CTLS TO INPUT EVASIVE MANEUVERS. I PERFORMED A DSNDING L 360 DEG TURN. I DO NOT BELIEVE ACFT #2 SAW ME. ACFT #2 WAS NOT USING COMS; NOR DID IT APPEAR HE WAS MONITORING. AN AIM RECOMMENDED PATTERN ENTRY WAS NOT UTILIZED BY ACFT #2 NOR WAS FAA RIGHT-OF-WAY REGS. IT APPEARED TO ME ACFT #2 ENTERED THE TFC PATTERN DIRECTLY INTO DOWNWIND.

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