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C150 in busy uncontrolled traffic pattern at kls experiences near midair collision with another aircraft on final for runway 30 who appeared to have been performing a straight in approach and failed to utilize the CTAF for advisories.
| Attributes | |
| ACN | 632214 |
| Time | |
| Date | 200409 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : kls.airport |
| State Reference | WA |
| Altitude | msl single value : 300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna 150 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach landing : go around |
| Route In Use | approach : traffic pattern |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time total : 110 |
| ASRS Report | 632214 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : executed go around flight crew : took evasive action |
| Miss Distance | horizontal : 0 vertical : 100 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
As I entered the pattern for landing at kls runway 30 (on runway 45 for left downwind runway 30) I took note that there were 4 other airplanes either in the pattern or coming in from the north to enter the pattern. I was able to identify the 3 airplanes in the pattern ahead of me and verified via radio that the 4TH airplane was still a couple of mi north. All the airplanes ahead of me landed without incident. As I turned base there were 2 airplanes on the runway, a single engine plane landing and getting ready to turn onto the taxiway and a twin engine ready for takeoff. Because of this congestion I was watching this closely in case I had to do a go around. The single engine plane turned on taxiway with announcement on radio (CTAF). The twin took off and I turned final about the same time. When I was down to about 300 ft MSL I saw another single engine plane at a faster speed landing underneath me. I immediately turned to the right to get off his path and engaged go around procedures. I estimate that I was less than 100 ft directly above the other plane when it passed under me. As far as I could tell there were no radio xmissions from this plane. Also, because of my awareness of the pattern I find it likely that he did a straight in from the south. Since there are hills on the right side of runway 30, as soon as I had positive rate of climb I turned across the runway and headed due west until I could reenter the pattern and complete my touch and go landing. Just as I was avoiding the other plane I heard someone broadcasting that 2 planes were trying to land at the same time. Once climbing I announced the aborted landing as I was heading west.
Original NASA ASRS Text
Title: C150 IN BUSY UNCTLED TFC PATTERN AT KLS EXPERIENCES NMAC WITH ANOTHER ACFT ON FINAL FOR RWY 30 WHO APPEARED TO HAVE BEEN PERFORMING A STRAIGHT IN APCH AND FAILED TO UTILIZE THE CTAF FOR ADVISORIES.
Narrative: AS I ENTERED THE PATTERN FOR LNDG AT KLS RWY 30 (ON RWY 45 FOR L DOWNWIND RWY 30) I TOOK NOTE THAT THERE WERE 4 OTHER AIRPLANES EITHER IN THE PATTERN OR COMING IN FROM THE N TO ENTER THE PATTERN. I WAS ABLE TO IDENT THE 3 AIRPLANES IN THE PATTERN AHEAD OF ME AND VERIFIED VIA RADIO THAT THE 4TH AIRPLANE WAS STILL A COUPLE OF MI N. ALL THE AIRPLANES AHEAD OF ME LANDED WITHOUT INCIDENT. AS I TURNED BASE THERE WERE 2 AIRPLANES ON THE RWY, A SINGLE ENG PLANE LNDG AND GETTING READY TO TURN ONTO THE TXWY AND A TWIN ENG READY FOR TKOF. BECAUSE OF THIS CONGESTION I WAS WATCHING THIS CLOSELY IN CASE I HAD TO DO A GAR. THE SINGLE ENG PLANE TURNED ON TXWY WITH ANNOUNCEMENT ON RADIO (CTAF). THE TWIN TOOK OFF AND I TURNED FINAL ABOUT THE SAME TIME. WHEN I WAS DOWN TO ABOUT 300 FT MSL I SAW ANOTHER SINGLE ENG PLANE AT A FASTER SPD LNDG UNDERNEATH ME. I IMMEDIATELY TURNED TO THE R TO GET OFF HIS PATH AND ENGAGED GAR PROCS. I ESTIMATE THAT I WAS LESS THAN 100 FT DIRECTLY ABOVE THE OTHER PLANE WHEN IT PASSED UNDER ME. AS FAR AS I COULD TELL THERE WERE NO RADIO XMISSIONS FROM THIS PLANE. ALSO, BECAUSE OF MY AWARENESS OF THE PATTERN I FIND IT LIKELY THAT HE DID A STRAIGHT IN FROM THE S. SINCE THERE ARE HILLS ON THE R SIDE OF RWY 30, AS SOON AS I HAD POSITIVE RATE OF CLB I TURNED ACROSS THE RWY AND HEADED DUE W UNTIL I COULD REENTER THE PATTERN AND COMPLETE MY TOUCH AND GO LNDG. JUST AS I WAS AVOIDING THE OTHER PLANE I HEARD SOMEONE BROADCASTING THAT 2 PLANES WERE TRYING TO LAND AT THE SAME TIME. ONCE CLBING I ANNOUNCED THE ABORTED LNDG AS I WAS HDG W.
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.