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Wake turbulence encounter causes air carrier medium large transport PIC to take over controls and execute an evasive action go around.
| Attributes | |
| ACN | 189664 |
| Time | |
| Date | 199109 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | agl bound lower : 1000 agl bound upper : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach landing : go around |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6000 |
| ASRS Report | 189664 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | inflight encounter other non adherence : required legal separation non adherence : published procedure other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
From a right base we were cleared a visual approach to runway 26R at ontario, ca. Through the turn I noticed a widebody transport on final ahead of us. I asked the tower the widebody transport's distance, and he responded the distance was 3.5 mi, but he is landing on the other runway 26L. I requested the winds as we continued the turn. The winds were given as 270 degree/15 KTS. I checked the airport page for runway separation distance and it seemed they were pretty close. Shortly after rolling wings level on final for 26R, we got an uncommanded left wing down roll of approximately 30 degree at 1000 ft AGL. I immediately took control of the aircraft and executed a go around. Following the go around we flew an uneventful visual approach and landing on 26L.
Original NASA ASRS Text
Title: WAKE TURB ENCOUNTER CAUSES ACR MLG PIC TO TAKE OVER CTLS AND EXECUTE AN EVASIVE ACTION GAR.
Narrative: FROM A R BASE WE WERE CLRED A VISUAL APCH TO RWY 26R AT ONTARIO, CA. THROUGH THE TURN I NOTICED A WDB ON FINAL AHEAD OF US. I ASKED THE TWR THE WDB'S DISTANCE, AND HE RESPONDED THE DISTANCE WAS 3.5 MI, BUT HE IS LNDG ON THE OTHER RWY 26L. I REQUESTED THE WINDS AS WE CONTINUED THE TURN. THE WINDS WERE GIVEN AS 270 DEG/15 KTS. I CHKED THE ARPT PAGE FOR RWY SEPARATION DISTANCE AND IT SEEMED THEY WERE PRETTY CLOSE. SHORTLY AFTER ROLLING WINGS LEVEL ON FINAL FOR 26R, WE GOT AN UNCOMMANDED L WING DOWN ROLL OF APPROX 30 DEG AT 1000 FT AGL. I IMMEDIATELY TOOK CTL OF THE ACFT AND EXECUTED A GAR. FOLLOWING THE GAR WE FLEW AN UNEVENTFUL VISUAL APCH AND LNDG ON 26L.
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.