Near midair collision between 2 small aircraft aircraft in an uncontrolled traffic pattern.

Attributes
ACN	267905
Time
Date	199403
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : fs4 airport : f54
State Reference	TX
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach other
Flight Plan	None
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent : approach other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : cfi
Experience	flight time last 90 days : 140 flight time total : 1670 flight time type : 190
ASRS Report	267905
Person 2
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 400 vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

After entering the traffic pattern at arlington municipal airport, I was on final approach for landing and an aircraft turned base in front of me. I had made all previous position announcements and I contacted the pilot of the other aircraft and told him that I was on final approach and he replied that he would take corrective action. As he began to maneuver for additional spacing, additional conflict arose with another aircraft that was also in the pattern. I believe that the cause of the conflict was the inability of the other pilot to see an aircraft that was in front of him and below him on final approach as he was on his downwind leg.

Original NASA ASRS Text

Title: NMAC BTWN 2 SMA ACFT IN AN UNCTLED TFC PATTERN.

Narrative: AFTER ENTERING THE TFC PATTERN AT ARLINGTON MUNICIPAL ARPT, I WAS ON FINAL APCH FOR LNDG AND AN ACFT TURNED BASE IN FRONT OF ME. I HAD MADE ALL PREVIOUS POS ANNOUNCEMENTS AND I CONTACTED THE PLT OF THE OTHER ACFT AND TOLD HIM THAT I WAS ON FINAL APCH AND HE REPLIED THAT HE WOULD TAKE CORRECTIVE ACTION. AS HE BEGAN TO MANEUVER FOR ADDITIONAL SPACING, ADDITIONAL CONFLICT AROSE WITH ANOTHER ACFT THAT WAS ALSO IN THE PATTERN. I BELIEVE THAT THE CAUSE OF THE CONFLICT WAS THE INABILITY OF THE OTHER PLT TO SEE AN ACFT THAT WAS IN FRONT OF HIM AND BELOW HIM ON FINAL APCH AS HE WAS ON HIS DOWNWIND LEG.

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.