C177R pilot reported an near midair collision with a cessna 172 on short final at the non-towered S3...

Attributes
ACN	1391056
Time
Date	201609
Local Time Of Day	1201-1800
Place
Locale Reference	S39.Airport
State Reference	OR
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cardinal 177/177RG
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	None
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	None
Person 1
Function	Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 20 Flight Crew Total 940 Flight Crew Type 572
Events
Anomaly	Conflict NMAC

Narrative:

As we were landing on runway 28 another aircraft announced 'cardinal almost descended on us - going around'. Identified [themselves] as [a cessna 172] which we had heard announcing 'turning base' as we were about mid downwind. We had entered the pattern from the southwest on a 45. We had announced on the 45; downwind; base and final. Abeam the runway 28 numbers we saw a cessna on short final; which we assumed to be [the other cessna]. My passenger; also a certified pilot; had noted that the aircraft ahead of us on a higher downwind had disappeared into the clear sky and we did not see it after that. Also; there is a lot of visual ground clutter around S39. After landing; we saw a different cessna on the taxiway; having just landed. We never did see [the other cessna] after its disappearance on our downwind. We did not see it during our base turn or at the claimed near miss point. We might conclude [the other cessna] had used an extended pattern for us to arrive at touchdown simultaneously. We doubt speed differences were involved as we were under 90 knots on all pattern legs. There may have been missed/doubled radio calls as we did not realize or see he was on final. I have our GPS track data with altitude and times if this would help to explain what happened. We have not discussed these details with the other pilot as he was abusive on the radio after the event.

Original NASA ASRS Text

Title: C177R pilot reported an NMAC with a Cessna 172 on short final at the non-towered S39 airport.

Narrative: As we were landing on RWY 28 another aircraft announced 'Cardinal almost descended on us - going around'. Identified [themselves] as [a Cessna 172] which we had heard announcing 'turning base' as we were about mid downwind. We had entered the pattern from the southwest on a 45. We had announced on the 45; downwind; base and final. Abeam the RWY 28 numbers we saw a Cessna on short final; which we assumed to be [the other Cessna]. My passenger; also a certified pilot; had noted that the aircraft ahead of us on a higher downwind had disappeared into the clear sky and we did not see it after that. Also; there is a lot of visual ground clutter around S39. After landing; we saw a different Cessna on the taxiway; having just landed. We never did see [the other Cessna] after its disappearance on our downwind. We did not see it during our base turn or at the claimed near miss point. We might conclude [the other Cessna] had used an extended pattern for us to arrive at touchdown simultaneously. We doubt speed differences were involved as we were under 90 knots on all pattern legs. There may have been missed/doubled radio calls as we did not realize or see he was on final. I have our GPS track data with altitude and times if this would help to explain what happened. We have not discussed these details with the other pilot as he was abusive on the radio after the event.

Data retrieved from NASA's ASRS site 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.

C177R pilot reported an near midair collision with a cessna 172 on short final at the non-towered S39 airport.