Near midair collision at a non tower airport. Traffic sighted, evasive action, go around climb turn.

Attributes
ACN	353584
Time
Date	199611
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sbs
State Reference	CO
Altitude	agl bound lower : 200 agl bound upper : 200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-23-250 Turbo Aztec
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around
Route In Use	approach : visual
Flight Plan	VFR
Aircraft 2
Make Model Name	PA-18/19 Super Cub
Operating Under FAR Part	Part 91
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 68 flight time total : 1360 flight time type : 1100
ASRS Report	353584
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 200 vertical : 25
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on final to runway 32, and within 200 ft vertically of touchdown, I spotted an airplane slightly behind me and to my left. I turned to the right and climbed and went around. There were several witnesses. Other aircraft made a short turn from downwind to final. He had no radio. I don't believe airplanes should operate without radios. I called twice to announce my arrival and was acknowledged by unicom. Other airplane left area after landing. He was gone before I landed.

Original NASA ASRS Text

Title: NMAC AT A NON TWR ARPT. TFC SIGHTED, EVASIVE ACTION, GAR CLB TURN.

Narrative: WHILE ON FINAL TO RWY 32, AND WITHIN 200 FT VERTLY OF TOUCHDOWN, I SPOTTED AN AIRPLANE SLIGHTLY BEHIND ME AND TO MY L. I TURNED TO THE R AND CLBED AND WENT AROUND. THERE WERE SEVERAL WITNESSES. OTHER ACFT MADE A SHORT TURN FROM DOWNWIND TO FINAL. HE HAD NO RADIO. I DON'T BELIEVE AIRPLANES SHOULD OPERATE WITHOUT RADIOS. I CALLED TWICE TO ANNOUNCE MY ARR AND WAS ACKNOWLEDGED BY UNICOM. OTHER AIRPLANE LEFT AREA AFTER LNDG. HE WAS GONE BEFORE I LANDED.

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.