<< >> NASA ASRS Report 1262970, May 2015

B757 flight crew reported encountering wake turbulence at FL330 from an aircraft at FL340 that resulted in minor injuries to three flight attendants.

Attributes
ACN	1262970
Time
Date	201505
Local Time Of Day	0601-1200
Place
Locale Reference	ZID.ARTCC
State Reference	IN
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 30000 Flight Crew Type 4500
Person 2
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 240 Flight Crew Total 7000 Flight Crew Type 300
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter

Narrative:

Cruise climb stopped at FL330 by ATC for unseen traffic at FL340. Suspect crossed jetwash/wake turbulence. Sudden; very quick turbulence jolt encountered from smooth condition both before and after event. Flight attendants had just started service and were in aisle. 3 reported injured knee; wrist or back ache but declined medical assistance and continued flight to destination.

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Original NASA ASRS Text

Title: B757 flight crew reported encountering wake turbulence at FL330 from an aircraft at FL340 that resulted in minor injuries to three flight attendants.

Narrative: Cruise climb stopped at FL330 by ATC for unseen traffic at FL340. Suspect crossed jetwash/wake turbulence. Sudden; very quick turbulence jolt encountered from smooth condition both before and after event. Flight attendants had just started service and were in aisle. 3 reported injured knee; wrist or back ache but declined medical assistance and continued flight to destination.

Data retrieved from NASA's ASRS site 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.