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BAE125 climbing to FL370 encounter a severe roll caused by wake turbulence from a B757 8 mi ahead at FL370.
| Attributes | |
| ACN | 542537 |
| Time | |
| Date | 200203 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : diw.ndb |
| State Reference | NC |
| Altitude | msl single value : 36500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | general aviation : corporate |
| Make Model Name | BAe 125 Series 1000 |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other other ndb |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 70 flight time total : 13250 flight time type : 550 |
| ASRS Report | 542537 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | inflight encounter : wake turbulence |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action flight crew : regained aircraft control none taken : unable |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Wake turbulence upset behind a B757. We were level at FL350 doing .75 mach, about 220 NM south of diw near AR7. We were flying a heading of 005 degrees and a track of 018 degrees. The winds were 274 degrees/65 KTS. We were filed for FL370 but we had traffic at 11 O'clock position and 3 NM at FL370. ZJX (135.07) called and said if we slowed and got 8 NM behind the traffic they would let us up to FL370. We slowed to .70 mach and when we were 8 NM behind the traffic, center gave us FL370. We were climbing at .70 mach and around 500 FPM. When we went through FL365 I felt a slight nibble followed by a severe roll to the right. It took full left aileron and some time to recover from the roll. When things finally settled down and we were back to wings level our altitude was FL373. Center called and said we were only cleared to FL370. We responded 'we were recovering from a wake turbulence upset.' we were handed off to ZJX (120.12). We asked the new controller what we were following and what his speed was. ZJX said a B757 doing .80 mach. We asked if we could slow down to 10 NM in trail. Center asked if we wanted to turn left or right. We said left and turned left 15 degrees maintaining .70 mach. When we were 12 mi behind and slightly left of the path of the B757, center cleared us back direct diw.
Original NASA ASRS Text
Title: BAE125 CLBING TO FL370 ENCOUNTER A SEVERE ROLL CAUSED BY WAKE TURB FROM A B757 8 MI AHEAD AT FL370.
Narrative: WAKE TURB UPSET BEHIND A B757. WE WERE LEVEL AT FL350 DOING .75 MACH, ABOUT 220 NM S OF DIW NEAR AR7. WE WERE FLYING A HEADING OF 005 DEGS AND A TRACK OF 018 DEGS. THE WINDS WERE 274 DEGS/65 KTS. WE WERE FILED FOR FL370 BUT WE HAD TFC AT 11 O'CLOCK POS AND 3 NM AT FL370. ZJX (135.07) CALLED AND SAID IF WE SLOWED AND GOT 8 NM BEHIND THE TFC THEY WOULD LET US UP TO FL370. WE SLOWED TO .70 MACH AND WHEN WE WERE 8 NM BEHIND THE TFC, CTR GAVE US FL370. WE WERE CLBING AT .70 MACH AND AROUND 500 FPM. WHEN WE WENT THROUGH FL365 I FELT A SLIGHT NIBBLE FOLLOWED BY A SEVERE ROLL TO THE R. IT TOOK FULL L AILERON AND SOME TIME TO RECOVER FROM THE ROLL. WHEN THINGS FINALLY SETTLED DOWN AND WE WERE BACK TO WINGS LEVEL OUR ALT WAS FL373. CTR CALLED AND SAID WE WERE ONLY CLRED TO FL370. WE RESPONDED 'WE WERE RECOVERING FROM A WAKE TURB UPSET.' WE WERE HANDED OFF TO ZJX (120.12). WE ASKED THE NEW CTLR WHAT WE WERE FOLLOWING AND WHAT HIS SPD WAS. ZJX SAID A B757 DOING .80 MACH. WE ASKED IF WE COULD SLOW DOWN TO 10 NM IN TRAIL. CTR ASKED IF WE WANTED TO TURN L OR R. WE SAID L AND TURNED L 15 DEGS MAINTAINING .70 MACH. WHEN WE WERE 12 MI BEHIND AND SLIGHTLY L OF THE PATH OF THE B757, CTR CLRED US BACK DIRECT DIW.
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.