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Flight crew of mdt loses control of aircraft for brief period during encounter with wake turbulence from a B767 during climb.
| Attributes | |
| ACN | 274520 |
| Time | |
| Date | 199406 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 17800 msl bound upper : 17800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw tracon : dfw tower : hnl |
| Operator | general aviation : corporate |
| Make Model Name | Challenger CL601 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 11600 flight time type : 700 |
| ASRS Report | 274520 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | inflight encounter other other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : regained aircraft control |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 36000 vertical : 1000 |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Challenger was climbing on the dfw 090 radial, approximately 40 DME, at 290 KIAS assigned when we encountered moderate to severe turbulence followed by and accompanied with a rapid roll rate. I don't believe that I stopped the roll but simply flew through the vortex. Then another roll in the opposite direction and more turbulence. Departure gave us a center frequency about that time and we reported the turbulence before we switched. The response was that we were following a 767 (and I believe he said at 6 mi). When we reported to center we asked about the 767 and were told he was at 12 O'clock and 10 mi. We still could not get a visual and didn't until we picked up his contrail at about FL300. We both leveled at FL330 but there were no further encounters.
Original NASA ASRS Text
Title: FLC OF MDT LOSES CTL OF ACFT FOR BRIEF PERIOD DURING ENCOUNTER WITH WAKE TURB FROM A B767 DURING CLB.
Narrative: CHALLENGER WAS CLBING ON THE DFW 090 RADIAL, APPROX 40 DME, AT 290 KIAS ASSIGNED WHEN WE ENCOUNTERED MODERATE TO SEVERE TURB FOLLOWED BY AND ACCOMPANIED WITH A RAPID ROLL RATE. I DON'T BELIEVE THAT I STOPPED THE ROLL BUT SIMPLY FLEW THROUGH THE VORTEX. THEN ANOTHER ROLL IN THE OPPOSITE DIRECTION AND MORE TURB. DEP GAVE US A CTR FREQ ABOUT THAT TIME AND WE RPTED THE TURB BEFORE WE SWITCHED. THE RESPONSE WAS THAT WE WERE FOLLOWING A 767 (AND I BELIEVE HE SAID AT 6 MI). WHEN WE RPTED TO CTR WE ASKED ABOUT THE 767 AND WERE TOLD HE WAS AT 12 O'CLOCK AND 10 MI. WE STILL COULD NOT GET A VISUAL AND DIDN'T UNTIL WE PICKED UP HIS CONTRAIL AT ABOUT FL300. WE BOTH LEVELED AT FL330 BUT THERE WERE NO FURTHER ENCOUNTERS.
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.