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Airspace.Class B : LAX
Person
Reference : 1
Location Of Person.Aircraft : X
Location In Aircraft : Flight Deck
Reporter Organization : Air Carrier
Function.Flight Crew : Pilot Flying
Function.Flight Crew : First Officer
ASRS Report Number.Accession Number : 838082
Human Factors : Situational Awareness
Human Factors : Communication Breakdown
Human Factors : Fatigue
Communication Breakdown.Party1 : ATC
Communication Breakdown.Party2 : Flight Crew
Events
Anomaly.Deviation - Track / Heading : All Types
Anomaly.Deviation - Procedural : Clearance
Anomaly.Inflight Event / Encounter : Wake Vortex Encounter
Anomaly.Inflight Event / Encounter : Loss Of Aircraft Control
Detector.Person : Flight Crew
Were Passengers Involved In Event : N
When Detected : In-flight
Result.Flight Crew : Returned To Clearance
Result.Flight Crew : Became Reoriented
Result.Flight Crew : Regained Aircraft Control
Result.Air Traffic Control : Issued New Clearance
Assessments
Contributing Factors / Situations : Human Factors
Contributing Factors / Situations : Airspace Structure
Contributing Factors / Situations : Manuals
Primary Problem : Manuals
Narrative: 1
While on the SEAVU TWO into LAX we encounter wake turbulence from an aircraft
that was ahead of us. The autopilot was disengaged to right the aircraft. At this
time ATC gave us our approach clearance. We heard that we had been cleared for
the SEAVU TWO ARRIVAL to intercept the 25L localizer and cleared for the
approach. We were then told to change frequencies. The next controller asked
which localizer we were tracking. We told him 25L. He told us we were supposed to
be on 24R. He then told us to turn right 10 degrees and intercept the 24R localizer
and cleared for the approach. There were no other problems with the approach. We
preplanned to fly the arrival to 25L off of the SEAVU ARRIVAL. We encountered the
wake turbulence just as we received our approach clearance. We were also fatigued
from flying the flight to LAX. We were also delayed due to last minute maintenance
item that had come up just before our push off the gate. This combined with the
wake turbulence acting as a distraction at the time the clearance for the approach
was given lead to the incorrect approach being flown. Two things can be done to
prevent this from occurring in the future. 1. If wake turbulence or any other type of
distraction happens when a critical clearance is give the distraction should be
stated to the controller and a request for clarification of the clearance should be
obtained. 2. SOCAL approach can be asked to give the arrivals a heads up on which
runway they can expect to be give before clearing the aircraft for its approach. We
have already been given the STAR into the airport but not the runway. If they could
give us the runway to expect earlier it would reduce the chances of error during the
high workload phase of flight
Synopsis
A B737-700 crew encounter wake turbulence on the LAX SEAVU TWO ARRIVAL and
because the upset distraction and fatigue failed to transition to Runway 24R from
the preplanned Runway 25L arrival.
ACN: 837959 (20 of 50)
Time / Day
Date : 200906
Local Time Of Day : 1201-1800
Place
Locale Reference.Airport : LBB.Airport
State Reference : TX
Altitude.MSL.Single Value : 5500
Environment
Flight Conditions : VMC
Weather Elements / Visibility : Turbulence
Light : Daylight
Aircraft
Reference : X
ATC / Advisory.Tower : LBB
Aircraft Operator : Personal
Make Model Name : Small Aircraft
Crew Size.Number Of Crew : 1
Operating Under FAR Part : Part 91
Flight Plan : VFR
Mission : Personal
Flight Phase : Takeoff
Flight Phase : Initial Climb
Airspace.Class C : LBB
Person
Reference : 1
Location Of Person.Aircraft : X
Location In Aircraft : Flight Deck
Reporter Organization : Personal
Function.Flight Crew : Pilot Flying
Function.Flight Crew : Single Pilot
Qualification.Flight Crew : Private
Experience.Flight Crew.Total : 123.8
Experience.Flight Crew.Last 90 Days : 23.7
Experience.Flight Crew.Type : 85.7
ASRS Report Number.Accession Number : 837959
Human Factors : Distraction
Events
Anomaly.ATC Issue : All Types
Anomaly.Inflight Event / Encounter : Wake Vortex Encounter
Detector.Person : Flight Crew
When Detected : In-flight
Result.Flight Crew : Took Evasive Action
Assessments
Contributing Factors / Situations : Human Factors
Contributing Factors / Situations : Environment - Non Weather Related
Primary Problem : Environment - Non Weather Related
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