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C172 pilot encounters wake turbulence while on approach to landing; aircraft is upset and pilot recovers from unusual attitude.
| Attributes | |
| ACN | 689834 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : vny.airport |
| State Reference | NY |
| Altitude | msl single value : 1600 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : vny.tower tower : lga.tower |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Aircraft 2 | |
| Controlling Facilities | tower : vny.tower |
| Operator | general aviation : corporate |
| Make Model Name | Global Express |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Person 1 | |
| Affiliation | other |
| Function | instruction : trainee |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 5 flight time total : 260 flight time type : 260 |
| ASRS Report | 689834 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : instructor |
| Events | |
| Anomaly | inflight encounter : wake turbulence other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : exited adverse environment flight crew : regained aircraft control |
| Supplementary | |
| Problem Areas | Aircraft Environmental Factor Flight Crew Human Performance |
| Primary Problem | Environmental Factor |
Narrative:
We had completed a VOR-a and lda-C practice approach prior and were flying a practice ILS runway 16R. As the winds were approximately 320 degrees at 10-15 KTS; we were instructed to circle-to-land west of vny and enter a left downwind for runway 34L. Tower advised us that we had traffic ahead -- a global express -- and we were #2 to land. We reported the traffic in sight; which was about 1-2 mins ahed at same altitude. Tower never cautioned us about wake turbulence; however; due to some confusion we stayed at this altitude. Because of the wind and distance; we did not expect any wake turbulence; but all of a sudden we went from straight-and-level to an uncommanded roll to the right of greater than 110 degrees; against full left aileron deflection; in about 1/2 second. My instructor pulled power to keep us from exceeding vne as we were now partially inverted and descending rapidly. I leveled the wings and we recovered.
Original NASA ASRS Text
Title: C172 PLT ENCOUNTERS WAKE TURB WHILE ON APCH TO LNDG; ACFT IS UPSET AND PLT RECOVERS FROM UNUSUAL ATTITUDE.
Narrative: WE HAD COMPLETED A VOR-A AND LDA-C PRACTICE APCH PRIOR AND WERE FLYING A PRACTICE ILS RWY 16R. AS THE WINDS WERE APPROX 320 DEGS AT 10-15 KTS; WE WERE INSTRUCTED TO CIRCLE-TO-LAND W OF VNY AND ENTER A L DOWNWIND FOR RWY 34L. TWR ADVISED US THAT WE HAD TFC AHEAD -- A GLOBAL EXPRESS -- AND WE WERE #2 TO LAND. WE RPTED THE TFC IN SIGHT; WHICH WAS ABOUT 1-2 MINS AHED AT SAME ALT. TWR NEVER CAUTIONED US ABOUT WAKE TURB; HOWEVER; DUE TO SOME CONFUSION WE STAYED AT THIS ALT. BECAUSE OF THE WIND AND DISTANCE; WE DID NOT EXPECT ANY WAKE TURB; BUT ALL OF A SUDDEN WE WENT FROM STRAIGHT-AND-LEVEL TO AN UNCOMMANDED ROLL TO THE R OF GREATER THAN 110 DEGS; AGAINST FULL L AILERON DEFLECTION; IN ABOUT 1/2 SECOND. MY INSTRUCTOR PULLED PWR TO KEEP US FROM EXCEEDING VNE AS WE WERE NOW PARTIALLY INVERTED AND DSNDING RAPIDLY. I LEVELED THE WINGS AND WE RECOVERED.
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.