Cirrus SR22 was involved in an near midair collision while established on downwind in a VFR traffic ...

Attributes
ACN	754851
Time
Date	200709
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : okv.airport
State Reference	VA
Altitude	agl bound lower : 980 agl bound upper : 1100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	VFR
Aircraft 2
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 40 flight time total : 190 flight time type : 30
ASRS Report	754851
Person 2
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 150 flight time total : 1300 flight time type : 300
ASRS Report	754669
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 50 vertical : 150
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was flying with a cirrus flight instructor near winchester; va. We entered the traffic pattern on a 45 degree to mid-field downwind. We had been monitoring CTAF from at least 15 NM out. There were aircraft in the pattern and one on an instrument approach. When we were approximately 4.5 NM out a cessna reported on downwind; I had an aircraft on downwind in sight and announced that we would enter on the 45 degrees and follow. While on the downwind the aircraft ahead began to turn base and a piper reported turning base on CTAF. Someone on the ground broadcast that an aircraft in the pattern had an unreadable radio. The instructor verified that it was not my radio. We were looking for the aircraft on the instrument approach to determine if we had space to land or would need to extend the downwind. Shortly thereafter we saw the cessna below and to our right. I immediately turned base and held pattern altitude with the intent of maneuvering away from the cessna and entering the upwind. The instructor reported turning base with the intent to enter the upwind on CTAF. Shortly thereafter the cessna reported turning base (we believe that he did not know our position). We entered the upwind; remained in the pattern and then landed without incident. Contributing factors to this incident was: the high wing versus low wing in the traffic pattern.

Original NASA ASRS Text

Title: CIRRUS SR22 WAS INVOLVED IN AN NMAC WHILE ESTABLISHED ON DOWNWIND IN A VFR TFC PATTERN.

Narrative: I WAS FLYING WITH A CIRRUS FLT INSTRUCTOR NEAR WINCHESTER; VA. WE ENTERED THE TFC PATTERN ON A 45 DEG TO MID-FIELD DOWNWIND. WE HAD BEEN MONITORING CTAF FROM AT LEAST 15 NM OUT. THERE WERE ACFT IN THE PATTERN AND ONE ON AN INST APCH. WHEN WE WERE APPROX 4.5 NM OUT A CESSNA RPTED ON DOWNWIND; I HAD AN ACFT ON DOWNWIND IN SIGHT AND ANNOUNCED THAT WE WOULD ENTER ON THE 45 DEGS AND FOLLOW. WHILE ON THE DOWNWIND THE ACFT AHEAD BEGAN TO TURN BASE AND A PIPER RPTED TURNING BASE ON CTAF. SOMEONE ON THE GND BROADCAST THAT AN ACFT IN THE PATTERN HAD AN UNREADABLE RADIO. THE INSTRUCTOR VERIFIED THAT IT WAS NOT MY RADIO. WE WERE LOOKING FOR THE ACFT ON THE INST APCH TO DETERMINE IF WE HAD SPACE TO LAND OR WOULD NEED TO EXTEND THE DOWNWIND. SHORTLY THEREAFTER WE SAW THE CESSNA BELOW AND TO OUR R. I IMMEDIATELY TURNED BASE AND HELD PATTERN ALT WITH THE INTENT OF MANEUVERING AWAY FROM THE CESSNA AND ENTERING THE UPWIND. THE INSTRUCTOR RPTED TURNING BASE WITH THE INTENT TO ENTER THE UPWIND ON CTAF. SHORTLY THEREAFTER THE CESSNA RPTED TURNING BASE (WE BELIEVE THAT HE DID NOT KNOW OUR POS). WE ENTERED THE UPWIND; REMAINED IN THE PATTERN AND THEN LANDED WITHOUT INCIDENT. CONTRIBUTING FACTORS TO THIS INCIDENT WAS: THE HIGH WING VERSUS LOW WING IN THE TFC PATTERN.

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.

Cirrus SR22 was involved in an near midair collision while established on downwind in a VFR traffic pattern.