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Flight Phase : Climb
Airspace.Class A : ZAB.A
Person
Reference : 1
Location Of Person.Aircraft : X
Reporter Organization : Air Carrier
Function.Flight Crew : Pilot Flying
Function.Flight Crew : Captain
ASRS Report Number.Accession Number : 808477
Events
Anomaly.Deviation - Speed : All Types
Anomaly.Inflight Event / Encounter : Wake Vortex Encounter
Detector.Person : Flight Crew
Result.Flight Crew : Regained Aircraft Control
Assessments
Contributing Factors / Situations : Environment - Non Weather Related
Contributing Factors / Situations : Airspace Structure
Primary Problem : Ambiguous
Narrative: 1
WE WERE HELD IN POSITION FOR TAKEOFF ON RWY 7L BEHIND A DEPARTING
B757 DUE TO WAKE TURB. AFTER APPROPRIATE DELAY WE RECEIVED TKOF CLRNC
AND DEPARTED. INITIAL CLB WAS NORMAL, HOWEVER CLBING THROUGH APPROX
23000 FT WE ENCOUNTERED WAKE TURBULENCE OF MODERATE INTENSITY. ACFT
ROLLED TO THE R AND I DISCONNECTED THE AUTOPLT AND AUTOTHROTTLE AND
PITCHED DOWN AND CONTINUED THE TURN TO THE R IN AN ATTEMPT TO EXIT
THE VORTEX. ENCOUNTER LASTED APPROX 3 SECONDS. AFTER WE CLEARED THE
TURB WE INFORMED ATC OF THE ENCOUNTER AND ASKED FOR THE POSITION OF
THE B757. THEY RPTED HE WAS 10 MILES AHEAD OF US. WE SPOKE WITH THE
CABIN CREW TO ENSURE THERE WERE NO INJURIES AND THEY RPTED ALL IN
CABIN WERE OK. I MADE AN ANNOUNCEMENT TO THE PAX AND WE PROCEEDED
UNEVENTFULLY. ATC DID NOT PROVIDE ADEQUATE SPACING OR INFORM US OF
THE B757'S POSITION. I BELIEVE IN TRAIL SPACING SHOULD BE RE-EVALUATED
FOR WAKE TURBULENCE BEHIND HEAVY/LARGER ACFT. THIS IS THE THIRD TIME I
HAVE ENCOUNTERED WAKE TURB BEHIND A B757 DURING CLB AND ON ONE
OCCASION WE WERE 17 MILES IN TRAIL AND INJURIES TO A CABIN CREW
MEMBER RESULTED. THESE ENCOUNTERS ALWAYS PRESENT A RISK OF INJURY.
Synopsis
A B737 PLT RPTS WAKE TURBULENCE AT FL230 10 NM IN TRAIL OF A B757.
ACN: 808266 (50 of 50)
Time / Day
Date : 200810
Local Time Of Day : 1201-1800
Place
Locale Reference.Navaid : JCT.VORTAC
State Reference : TX
Altitude.MSL.Single Value : 29500
Environment
Flight Conditions : VMC
Light : Daylight
Aircraft : 1
Reference : X
ATC / Advisory.Center : ZHU.ARTCC
Aircraft Operator : Air Carrier
Make Model Name : B737-300
Crew Size.Number Of Crew : 2
Operating Under FAR Part : Part 121
Flight Plan : IFR
Mission : Passenger
Flight Phase : Climb
Route In Use.Airway : J86.Airway
Airspace.Class A : ZHU.A
Aircraft : 2
Reference : Y
ATC / Advisory.Center : ZHU.ARTCC
Aircraft Operator : Air Carrier
Make Model Name : B767 Undifferentiated or Other Model
Flight Plan : IFR
Airspace.Class A : ZHU.A
Person : 1
Reference : 1
Location Of Person.Aircraft : X
Reporter Organization : Air Carrier
Function.Flight Crew : Captain
Function.Flight Crew : Pilot Not Flying
Qualification.Flight Crew : Air Transport Pilot (ATP)
Experience.Flight Crew.Total : 11000
Experience.Flight Crew.Last 90 Days : 171
Experience.Flight Crew.Type : 7000
ASRS Report Number.Accession Number : 808266
Person : 2
Reference : 2
Location Of Person.Aircraft : X
Reporter Organization : Air Carrier
Function.Flight Crew : Pilot Flying
Function.Flight Crew : First Officer
Experience.Flight Crew.Last 90 Days : 229
Experience.Flight Crew.Type : 1800
ASRS Report Number.Accession Number : 808269
Events
Anomaly.Deviation - Procedural : Clearance
Anomaly.Inflight Event / Encounter : Loss Of Aircraft Control
Anomaly.Inflight Event / Encounter : Wake Vortex Encounter
Detector.Person : Flight Crew
Result.Flight Crew : Regained Aircraft Control
Result.Air Traffic Control : Issued New Clearance
Assessments
Contributing Factors / Situations : Environment - Non Weather Related
Primary Problem : Environment - Non Weather Related
Narrative: 1
WE ENCOUNTERED WAKE TURB CLBING THRU FL295 UP TO FL340. WHEN WE HIT
THE CLEAR AIR TURB THE FO TOOK CONTROL OF THE ACFT AND DISCONNECTED
THE AUTOPLT. HE THEN MADE CORRECTIONS FOR AN IMMEDIATE DSCNT TO GET
OUT OF THE WAKE TURB. I CALLED BACK ON THE PA TO THE FLT ATTENDANTS
FIRST TO TELL THEM TO SIT DOWN. IT WAS ABOUT 5-10 SECONDS BEFORE I
CALLED ATC TO TELL THEM WE ENCOUNTERED SEVERE TURB AND WERE DSNDING
TO A SMOOTHER ALTITUDE. ATC REPLIED THAT WE WERE CLEARED TO FL280.
THE FO AND I AGREED TO SUBMIT A RPT JUST IN CASE THE DSCNT CREATED A
PROBLEM WITH ANYTHING ELSE BEFORE ATC GAVE US AN ALTITUDE CLRNC. NO
INJURIES TO PAX, FLT ATTENDANTS OR CAPTAIN'S EGO. WE WROTE UP THE
SEVERE TURB WHEN WE LANDED AT OUR DEST. BOTH THE FO AND I WERE
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