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Arriving at 1w1 a P18 pilot encounters uncommanded pitch and roll that he assumes is related to wake from aircraft at nearby pdx.
| Attributes | |
| ACN | 732189 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : 1w1.airport |
| State Reference | WA |
| Altitude | agl single value : 1200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : den.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-18/19 Super Cub |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Flight Phase | climbout : intermediate altitude |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 100 flight time total : 14000 flight time type : 300 |
| ASRS Report | 732189 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | inflight encounter : wake turbulence other anomaly other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control |
| Supplementary | |
| Problem Areas | Airspace Structure Environmental Factor |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I was on approach to landing at camas airport (1w1) when I encountered C.a.T. The airplane was rolled to the left and the nose pitched up. I recovered and experienced a second rolling; pitching event. I throttled back and descended in slow flight with a nose up attitude and landed without incident. The camas airport is directly below the heavy jet traffic arriving and departing pdx. I assume this event was caused by wake turbulence or a wing tip vortex from a transport airplane arriving or departing pdx.
Original NASA ASRS Text
Title: ARRIVING AT 1W1 A P18 PLT ENCOUNTERS UNCOMMANDED PITCH AND ROLL THAT HE ASSUMES IS RELATED TO WAKE FROM ACFT AT NEARBY PDX.
Narrative: I WAS ON APCH TO LNDG AT CAMAS ARPT (1W1) WHEN I ENCOUNTERED C.A.T. THE AIRPLANE WAS ROLLED TO THE L AND THE NOSE PITCHED UP. I RECOVERED AND EXPERIENCED A SECOND ROLLING; PITCHING EVENT. I THROTTLED BACK AND DSNDED IN SLOW FLT WITH A NOSE UP ATTITUDE AND LANDED WITHOUT INCIDENT. THE CAMAS ARPT IS DIRECTLY BELOW THE HEAVY JET TFC ARRIVING AND DEPARTING PDX. I ASSUME THIS EVENT WAS CAUSED BY WAKE TURB OR A WING TIP VORTEX FROM A TRANSPORT AIRPLANE ARRIVING OR DEPARTING PDX.
Data retrieved from NASA's ASRS site as of January 2009 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.