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Near midair collision between an small aircraft single engine land and an ultralight aircraft in the airport traffic pattern.
| Attributes | |
| ACN | 251051 |
| Time | |
| Date | 199309 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : s88 |
| State Reference | WA |
| Altitude | agl bound lower : 500 agl bound upper : 900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | other |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Ultralight |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 270 flight time total : 6000 flight time type : 50 |
| ASRS Report | 251051 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | other other : other |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure 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 : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I conducted a VFR flight from bfi to arlington airport. Low cloud marine fog, variable 1200-1500 AGL, visibilities 7 mi, breaks in overcast. NOTAMS for arlington cite taxiway and ramp construction, sharp bumps in pavement, etc. I utilized latest altimeter setting as reported by paine tower (everett, wa) approximately 12 mi south of arlington (I believe it was 30.07). At any rate, unicom 122.7 advised traffic landing to south runway 16. I reported 45 to downwind. Saw no traffic, heard an aircraft reporting takeoff staying in the pattern. I reported downwind established at 900 ft AGL for cloud clearance. Saw no traffic. Proceeded base leg. Reported to unicom final, landing runway 16 reported, saw no traffic. Landed and taxied to ramp. At this time, a car pulled up and a gentleman walks up and asked were you flying this plane which I replied in the affirmative. He asked, 'do you know what you did wrong?' I replied I was not aware of doing anything wrong, what's up? It seems that an ultralight aircraft convention was being held at the west side of the field where ultralights are hangared and this fellow claims a near miss occurred during my downwind leg. That I should have been on a downwind leg farther west of the field (r-hand turns landing south) approximately 2 mi!
Original NASA ASRS Text
Title: NMAC BTWN AN SMA SINGLE ENG LAND AND AN ULTRALIGHT ACFT IN THE ARPT TFC PATTERN.
Narrative: I CONDUCTED A VFR FLT FROM BFI TO ARLINGTON ARPT. LOW CLOUD MARINE FOG, VARIABLE 1200-1500 AGL, VISIBILITIES 7 MI, BREAKS IN OVCST. NOTAMS FOR ARLINGTON CITE TXWY AND RAMP CONSTRUCTION, SHARP BUMPS IN PAVEMENT, ETC. I UTILIZED LATEST ALTIMETER SETTING AS RPTED BY PAINE TWR (EVERETT, WA) APPROX 12 MI S OF ARLINGTON (I BELIEVE IT WAS 30.07). AT ANY RATE, UNICOM 122.7 ADVISED TFC LNDG TO S RWY 16. I RPTED 45 TO DOWNWIND. SAW NO TFC, HEARD AN ACFT RPTING TKOF STAYING IN THE PATTERN. I RPTED DOWNWIND ESTABLISHED AT 900 FT AGL FOR CLOUD CLRNC. SAW NO TFC. PROCEEDED BASE LEG. RPTED TO UNICOM FINAL, LNDG RWY 16 RPTED, SAW NO TFC. LANDED AND TAXIED TO RAMP. AT THIS TIME, A CAR PULLED UP AND A GENTLEMAN WALKS UP AND ASKED WERE YOU FLYING THIS PLANE WHICH I REPLIED IN THE AFFIRMATIVE. HE ASKED, 'DO YOU KNOW WHAT YOU DID WRONG?' I REPLIED I WAS NOT AWARE OF DOING ANYTHING WRONG, WHAT'S UP? IT SEEMS THAT AN ULTRALIGHT ACFT CONVENTION WAS BEING HELD AT THE W SIDE OF THE FIELD WHERE ULTRALIGHTS ARE HANGARED AND THIS FELLOW CLAIMS A NEAR MISS OCCURRED DURING MY DOWNWIND LEG. THAT I SHOULD HAVE BEEN ON A DOWNWIND LEG FARTHER W OF THE FIELD (R-HAND TURNS LNDG S) APPROX 2 MI!
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.