C172 turned downwind then hit by second C172 entering pattern.

Attributes
ACN	330664
Time
Date	199603
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : apc
State Reference	CA
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : apc
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	VFR
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 28 flight time total : 435
ASRS Report	330664
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	other
Miss Distance	horizontal : 0 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Had just turned downwind at 1000 ft at 80 mph when a cessna suddenly appeared on my left closing rapidly at about 100 ft distance. I took evasive action rolling hard right and diving. The planes collided damaging the other aircraft's right elevator and minor damage to my aircraft's left distal front wing and minimal scope on the left strut and front edge of wing above strut. Both planes landed without difficulty. Both pilots were solo and neither was hurt. There was no radio warning of approaching aircraft. Callback conversation with reporter revealed the following information: reporter states he filed reports with both FAA and NTSB and has heard from neither organization. Reporter recently called NTSB for a copy of their report and copy of the tower transcript. They will be available in a few weeks. Reporter indicated that the tower normally will give TA's to aircraft in the pattern if another aircraft is entering the pattern. No advisory of any kind was issued. Reporter feels that the other aircraft was in the wrong place and tower not aware of his position. Reporter aircraft has been repaired and is flying again.

Original NASA ASRS Text

Title: C172 TURNED DOWNWIND THEN HIT BY SECOND C172 ENTERING PATTERN.

Narrative: HAD JUST TURNED DOWNWIND AT 1000 FT AT 80 MPH WHEN A CESSNA SUDDENLY APPEARED ON MY L CLOSING RAPIDLY AT ABOUT 100 FT DISTANCE. I TOOK EVASIVE ACTION ROLLING HARD R AND DIVING. THE PLANES COLLIDED DAMAGING THE OTHER ACFT'S R ELEVATOR AND MINOR DAMAGE TO MY ACFT'S L DISTAL FRONT WING AND MINIMAL SCOPE ON THE L STRUT AND FRONT EDGE OF WING ABOVE STRUT. BOTH PLANES LANDED WITHOUT DIFFICULTY. BOTH PLTS WERE SOLO AND NEITHER WAS HURT. THERE WAS NO RADIO WARNING OF APCHING ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES HE FILED RPTS WITH BOTH FAA AND NTSB AND HAS HEARD FROM NEITHER ORGANIZATION. RPTR RECENTLY CALLED NTSB FOR A COPY OF THEIR RPT AND COPY OF THE TWR TRANSCRIPT. THEY WILL BE AVAILABLE IN A FEW WKS. RPTR INDICATED THAT THE TWR NORMALLY WILL GIVE TA'S TO ACFT IN THE PATTERN IF ANOTHER ACFT IS ENTERING THE PATTERN. NO ADVISORY OF ANY KIND WAS ISSUED. RPTR FEELS THAT THE OTHER ACFT WAS IN THE WRONG PLACE AND TWR NOT AWARE OF HIS POS. RPTR ACFT HAS BEEN REPAIRED AND IS FLYING AGAIN.

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.