Aircraft leveling at cruise altitude under clear skies, encountered severe turbulence (jolt) resulti...

Attributes
ACN	486750
Time
Date	200010
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : bae.vortac
State Reference	WI
Altitude	msl bound lower : 20.900 msl bound upper : 21.000
Environment
Flight Conditions	VMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp.artcc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Route In Use	arrival star : bae.eau 4
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 5000
ASRS Report	486750
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	cabin event other inflight encounter : turbulence inflight encounter : wake turbulence
Independent Detector	other flight crewa other flight crewb other other : flc 3
Resolutory Action	none taken : anomaly accepted none taken : unable none taken : insufficient time
Consequence	other
Supplementary
Problem Areas	Aircraft Weather
Primary Problem	Aircraft

Narrative:

During our climb to FL210, we encountered a severe jolt of shear at FL209. No echoes or severe WX, clear skies. Asked ZMP if any aircraft through this area lately. She said 'an aircraft went through about 7 mi ahead.' we immediately thought of wake turbulence. 3 flight attendants hurt, 1 crew member bumped head, and 1 passenger was slightly hurt.

Original NASA ASRS Text

Title: ACFT LEVELING AT CRUISE ALT UNDER CLR SKIES, ENCOUNTERED SEVERE TURB (JOLT) RESULTING IN INJURY.

Narrative: DURING OUR CLB TO FL210, WE ENCOUNTERED A SEVERE JOLT OF SHEAR AT FL209. NO ECHOES OR SEVERE WX, CLR SKIES. ASKED ZMP IF ANY ACFT THROUGH THIS AREA LATELY. SHE SAID 'AN ACFT WENT THROUGH ABOUT 7 MI AHEAD.' WE IMMEDIATELY THOUGHT OF WAKE TURB. 3 FLT ATTENDANTS HURT, 1 CREW MEMBER BUMPED HEAD, AND 1 PAX WAS SLIGHTLY HURT.

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.

Aircraft leveling at cruise altitude under clear skies, encountered severe turbulence (jolt) resulting in injury.