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On departure from iah, a carj encounters wake turbulence from a crossing B737-800, causing uncontrolled pitch and climb.
| Attributes | |
| ACN | 610158 |
| Time | |
| Date | 200402 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : iah.vortac |
| State Reference | TX |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : i90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : i90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Experience | flight time last 90 days : 120 flight time total : 3500 flight time type : 1800 |
| ASRS Report | 610158 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : wake turbulence other anomaly |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | controller : separated traffic controller : issued new clearance flight crew : took evasive action flight crew : overrode automation flight crew : regained aircraft control |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Problem Areas | Environmental Factor Weather Aircraft |
| Primary Problem | Aircraft |
Narrative:
About 5 mins after takeoff at 4000 ft MSL, heading 270 degrees and 250 KTS, encountered wake turbulence from a B737-800. The autoplt was engaged, but automatically disengaged. The plane rolled about 20-30 degrees and pitched up about 15 degrees. The captain immediately corrected, but gained about 300 ft, no more. We informed houston that we had encountered wake, and he stated the type aircraft and issued speed and heading changes for us. The remainder of the flight was normal. Callback conversation with reporter revealed the following information: reporter advised that they were assigned 4000 ft due to the crossing traffic, right to left, at 5000 ft. They could see the aircraft on TCAS but not visually due to WX. The reporter could not remember the TCAS distance. It was only after the pitch and climb recovery did the carj flight crew ask what type aircraft had just passed, being advised by I90 that it was a B737-800. The reporter advised that similar occurrences have been experienced caused by the wake of a B737-800.
Original NASA ASRS Text
Title: ON DEP FROM IAH, A CARJ ENCOUNTERS WAKE TURB FROM A XING B737-800, CAUSING UNCTLED PITCH AND CLB.
Narrative: ABOUT 5 MINS AFTER TKOF AT 4000 FT MSL, HDG 270 DEGS AND 250 KTS, ENCOUNTERED WAKE TURB FROM A B737-800. THE AUTOPLT WAS ENGAGED, BUT AUTOMATICALLY DISENGAGED. THE PLANE ROLLED ABOUT 20-30 DEGS AND PITCHED UP ABOUT 15 DEGS. THE CAPT IMMEDIATELY CORRECTED, BUT GAINED ABOUT 300 FT, NO MORE. WE INFORMED HOUSTON THAT WE HAD ENCOUNTERED WAKE, AND HE STATED THE TYPE ACFT AND ISSUED SPD AND HDG CHANGES FOR US. THE REMAINDER OF THE FLT WAS NORMAL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THAT THEY WERE ASSIGNED 4000 FT DUE TO THE XING TFC, R TO L, AT 5000 FT. THEY COULD SEE THE ACFT ON TCAS BUT NOT VISUALLY DUE TO WX. THE RPTR COULD NOT REMEMBER THE TCAS DISTANCE. IT WAS ONLY AFTER THE PITCH AND CLB RECOVERY DID THE CARJ FLT CREW ASK WHAT TYPE ACFT HAD JUST PASSED, BEING ADVISED BY I90 THAT IT WAS A B737-800. THE RPTR ADVISED THAT SIMILAR OCCURRENCES HAVE BEEN EXPERIENCED CAUSED BY THE WAKE OF A B737-800.
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.