Near midair collision - 2 pilots have a near midair collision at an uncontrolled airport.

Attributes
ACN	300693
Time
Date	199504
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sxq
State Reference	AK
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Daylight
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	Cessna Aircraft Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	descent : approach other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 50 flight time total : 6000 flight time type : 150
ASRS Report	300693
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac other anomaly other other spatial deviation
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were inbound to soldotna airport from anchorage international (from the north). At approximately 20 NM north we monitored frequency 122.5 to get a traffic picture. Also, while doing this, we monitored the AWOS on 135.45 which reported the wind of approximately 330 degrees at 10 KTS (a direct crosswind to runway 25). We heard a piper report entering left traffic for runway 25. We reported 10 NM north planning left traffic runway 25 at soldotna. Then we heard the piper call final for runway 25. We slowed and remained at 1200 ft MSL. We called on the CTAF (122.5) that we were 4 NM north planning runway 25 at soldotna. When we were approximately 2 mi north, a single engine cessna reported 4 mi north planning right traffic for runway 7 at soldotna. We assumed the single engine cessna was behind us and we reported overhead the airport for runway 25 soldotna. Shortly thereafter, the single engine cessna called to tell us that we had just flown over him at approximately 100 ft. We never saw the other traffic. Also, the single engine cessna called that they were at 600 ft when they called 4 mi north (we were 2 mi north at that time). We continued landing on runway 25, making left traffic. The single engine cessna circled and made right traffic for runway 07 at soldotna. I'm not sure that we could do anything differently. We slowed early, we remained at 1200 ft MSL (which is approximately 1100 ft above the airport, which is 107 ft MSL), we made all of the necessary calls, had a good picture (mentally) of where the other traffic said they were, I never considered the possibility that the other traffic's position calls could be so far off. Fortunately, we missed by approximately 100 ft, I would have much preferred to have sighted the other aircraft (which we never did until our left base then he was right downwind). The AWOS reported the altimeter as 29.66 which we were using, the other traffic called that they were at '600 ft.' we should have been 600 ft apart??? Even if the other traffic meant they were 600 ft AGL we should have had 500 ft between us. I suspect that the other aircraft was not using the current altimeter setting. Of course I was partially at fault for not being able to see this other aircraft which was ahead and lower.

Original NASA ASRS Text

Title: NMAC - 2 PLTS HAVE A NMAC AT AN UNCTLED ARPT.

Narrative: WE WERE INBOUND TO SOLDOTNA ARPT FROM ANCHORAGE INTL (FROM THE N). AT APPROX 20 NM N WE MONITORED FREQ 122.5 TO GET A TFC PICTURE. ALSO, WHILE DOING THIS, WE MONITORED THE AWOS ON 135.45 WHICH RPTED THE WIND OF APPROX 330 DEGS AT 10 KTS (A DIRECT XWIND TO RWY 25). WE HEARD A PIPER RPT ENTERING L TFC FOR RWY 25. WE RPTED 10 NM N PLANNING L TFC RWY 25 AT SOLDOTNA. THEN WE HEARD THE PIPER CALL FINAL FOR RWY 25. WE SLOWED AND REMAINED AT 1200 FT MSL. WE CALLED ON THE CTAF (122.5) THAT WE WERE 4 NM N PLANNING RWY 25 AT SOLDOTNA. WHEN WE WERE APPROX 2 MI N, A SINGLE ENG CESSNA RPTED 4 MI N PLANNING R TFC FOR RWY 7 AT SOLDOTNA. WE ASSUMED THE SINGLE ENG CESSNA WAS BEHIND US AND WE RPTED OVERHEAD THE ARPT FOR RWY 25 SOLDOTNA. SHORTLY THEREAFTER, THE SINGLE ENG CESSNA CALLED TO TELL US THAT WE HAD JUST FLOWN OVER HIM AT APPROX 100 FT. WE NEVER SAW THE OTHER TFC. ALSO, THE SINGLE ENG CESSNA CALLED THAT THEY WERE AT 600 FT WHEN THEY CALLED 4 MI N (WE WERE 2 MI N AT THAT TIME). WE CONTINUED LNDG ON RWY 25, MAKING L TFC. THE SINGLE ENG CESSNA CIRCLED AND MADE R TFC FOR RWY 07 AT SOLDOTNA. I'M NOT SURE THAT WE COULD DO ANYTHING DIFFERENTLY. WE SLOWED EARLY, WE REMAINED AT 1200 FT MSL (WHICH IS APPROX 1100 FT ABOVE THE ARPT, WHICH IS 107 FT MSL), WE MADE ALL OF THE NECESSARY CALLS, HAD A GOOD PICTURE (MENTALLY) OF WHERE THE OTHER TFC SAID THEY WERE, I NEVER CONSIDERED THE POSSIBILITY THAT THE OTHER TFC'S POS CALLS COULD BE SO FAR OFF. FORTUNATELY, WE MISSED BY APPROX 100 FT, I WOULD HAVE MUCH PREFERRED TO HAVE SIGHTED THE OTHER ACFT (WHICH WE NEVER DID UNTIL OUR L BASE THEN HE WAS R DOWNWIND). THE AWOS RPTED THE ALTIMETER AS 29.66 WHICH WE WERE USING, THE OTHER TFC CALLED THAT THEY WERE AT '600 FT.' WE SHOULD HAVE BEEN 600 FT APART??? EVEN IF THE OTHER TFC MEANT THEY WERE 600 FT AGL WE SHOULD HAVE HAD 500 FT BTWN US. I SUSPECT THAT THE OTHER ACFT WAS NOT USING THE CURRENT ALTIMETER SETTING. OF COURSE I WAS PARTIALLY AT FAULT FOR NOT BEING ABLE TO SEE THIS OTHER ACFT WHICH WAS AHEAD AND LOWER.

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.