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An medium large transport crew, in descent to ord, experienced wake turbulence from preceding aircraft.
| Attributes | |
| ACN | 556585 |
| Time | |
| Date | 200207 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | msl single value : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zau.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Airbus Industrie Undifferentiated or Other Model |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 15000 flight time type : 1500 |
| ASRS Report | 556585 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter : wake turbulence other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance Environmental Factor |
| Primary Problem | Environmental Factor |
Narrative:
We were given a descent on our way into ord. The aircraft encountered wake turbulence and rolled 30 degrees. We noticed an aircraft 15 mi ahead on our TCASII and asked the type. Center told us it was an airbus. We again hit the wake and rolled 30 degrees turning off the autoplt. We asked the type of airbus and were told it was an A320. We slowed down to increase our separation. We were between 16-18 mi behind the aircraft the time we encountered their wake and he was descending as were we, our speed was assigned 320 KTS.
Original NASA ASRS Text
Title: AN MLG CREW, IN DSCNT TO ORD, EXPERIENCED WAKE TURB FROM PRECEDING ACFT.
Narrative: WE WERE GIVEN A DSCNT ON OUR WAY INTO ORD. THE ACFT ENCOUNTERED WAKE TURB AND ROLLED 30 DEGS. WE NOTICED AN ACFT 15 MI AHEAD ON OUR TCASII AND ASKED THE TYPE. CTR TOLD US IT WAS AN AIRBUS. WE AGAIN HIT THE WAKE AND ROLLED 30 DEGS TURNING OFF THE AUTOPLT. WE ASKED THE TYPE OF AIRBUS AND WERE TOLD IT WAS AN A320. WE SLOWED DOWN TO INCREASE OUR SEPARATION. WE WERE BTWN 16-18 MI BEHIND THE ACFT THE TIME WE ENCOUNTERED THEIR WAKE AND HE WAS DSNDING AS WERE WE, OUR SPD WAS ASSIGNED 320 KTS.
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.