A C172 CFI performs an evasive action turn climb to avoid a PA28 in the traffic pattern at sln, ks.

Attributes
ACN	526830
Time
Date	200110
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sln.airport
State Reference	KS
Altitude	msl single value : 2300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sln.tower
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 : visual approach : traffic pattern
Flight Plan	VFR
Aircraft 2
Controlling Facilities	tower : sln.tower
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 approach : visual
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot instruction : instructor
Qualification	pilot : cfi pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 400 flight time type : 200
ASRS Report	526830
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	conflict : nmac non adherence : clearance non adherence : far non adherence : required legal separation other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued advisory controller : separated traffic flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on a student training flight, we approached salina airport from the northeast and entered the pattern on a right downwind leg behind 2 other aircraft (C172's) also as instructed by ATC. As we were near abeam the departure end of runway 35 (the active runway), a PA28 departed the runway to remain in the pattern. The PA28 was advised by ATC that he was #4 in pattern -- we were #3. The PA28 reported having us sight. As we continued on downwind, I caught sight of the PA28 on its crosswind leg heading directly at us and closing in fast. I took the controls from my student and did a hard, climbing left turn to avoid the PA28, then resumed on the downwind leg I was on. I reported to tower 'that piper traffic is pretty close to us.' tower then advised the PA28 to 'give us a little space.' the flight continued without further conflict. Possible factors: the PA28 may have confused the other C172 in front of us for being us. The 3 C172's have exactly the same point scheme. Lack of good scan for traffic, both the PA28 and us, possible low wing vision obstruction, but not likely since altitudes were the same. Lack of the PA28 crew to verify that they were #4 for landing and report having all 3 aircraft in front of him. Possible high wing vision obstruction preventing us from seeing the PA28 sooner.

Original NASA ASRS Text

Title: A C172 CFI PERFORMS AN EVASIVE ACTION TURN CLB TO AVOID A PA28 IN THE TFC PATTERN AT SLN, KS.

Narrative: WHILE ON A STUDENT TRAINING FLT, WE APCHED SALINA ARPT FROM THE NE AND ENTERED THE PATTERN ON A R DOWNWIND LEG BEHIND 2 OTHER ACFT (C172'S) ALSO AS INSTRUCTED BY ATC. AS WE WERE NEAR ABEAM THE DEP END OF RWY 35 (THE ACTIVE RWY), A PA28 DEPARTED THE RWY TO REMAIN IN THE PATTERN. THE PA28 WAS ADVISED BY ATC THAT HE WAS #4 IN PATTERN -- WE WERE #3. THE PA28 RPTED HAVING US SIGHT. AS WE CONTINUED ON DOWNWIND, I CAUGHT SIGHT OF THE PA28 ON ITS XWIND LEG HEADING DIRECTLY AT US AND CLOSING IN FAST. I TOOK THE CTLS FROM MY STUDENT AND DID A HARD, CLBING L TURN TO AVOID THE PA28, THEN RESUMED ON THE DOWNWIND LEG I WAS ON. I RPTED TO TWR 'THAT PIPER TFC IS PRETTY CLOSE TO US.' TWR THEN ADVISED THE PA28 TO 'GIVE US A LITTLE SPACE.' THE FLT CONTINUED WITHOUT FURTHER CONFLICT. POSSIBLE FACTORS: THE PA28 MAY HAVE CONFUSED THE OTHER C172 IN FRONT OF US FOR BEING US. THE 3 C172'S HAVE EXACTLY THE SAME POINT SCHEME. LACK OF GOOD SCAN FOR TFC, BOTH THE PA28 AND US, POSSIBLE LOW WING VISION OBSTRUCTION, BUT NOT LIKELY SINCE ALTS WERE THE SAME. LACK OF THE PA28 CREW TO VERIFY THAT THEY WERE #4 FOR LNDG AND RPT HAVING ALL 3 ACFT IN FRONT OF HIM. POSSIBLE HIGH WING VISION OBSTRUCTION PREVENTING US FROM SEEING THE PA28 SOONER.

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.