<< >> NASA ASRS Report 631635, September 2004

Climbing through FL280, flight crew of B757 experiences moderate clear air turbulence. Flight attendant is thrown to the cabin floor and suffers a bruised elbow.

Attributes
ACN	631635
Time
Date	200409
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : spa.vortac
State Reference	SC
Altitude	msl bound lower : 28000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : ztl.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp technician : powerplant technician : airframe
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 5000
ASRS Report	631635
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	inflight encounter : turbulence
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Problem Areas	Environmental Factor
Primary Problem	Environmental Factor

Narrative:

While climbing through FL280, we experienced sudden, [unexpected] moderate turbulence. It lasted at least 10 seconds or more. The seatbelt sign was 'off' at the time, as our climb thus far had been smooth. We turned the seatbelt sign back 'on' during the violent encounter. Passenger were seated, however, the flight attendant in the rear cabin was knocked to the floor and bruised her elbow. We made an announcement for the passenger to 'remain seated' with their belts fastened. The flight attendants indicated the passenger were safely buckled in and that the injured flight attendant was sore but would be ok to continue onward.

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Original NASA ASRS Text

Title: CLBING THROUGH FL280, FLT CREW OF B757 EXPERIENCES MODERATE CLR AIR TURB. FLT ATTENDANT IS THROWN TO THE CABIN FLOOR AND SUFFERS A BRUISED ELBOW.

Narrative: WHILE CLBING THROUGH FL280, WE EXPERIENCED SUDDEN, [UNEXPECTED] MODERATE TURB. IT LASTED AT LEAST 10 SECONDS OR MORE. THE SEATBELT SIGN WAS 'OFF' AT THE TIME, AS OUR CLB THUS FAR HAD BEEN SMOOTH. WE TURNED THE SEATBELT SIGN BACK 'ON' DURING THE VIOLENT ENCOUNTER. PAX WERE SEATED, HOWEVER, THE FLT ATTENDANT IN THE REAR CABIN WAS KNOCKED TO THE FLOOR AND BRUISED HER ELBOW. WE MADE AN ANNOUNCEMENT FOR THE PAX TO 'REMAIN SEATED' WITH THEIR BELTS FASTENED. THE FLT ATTENDANTS INDICATED THE PAX WERE SAFELY BUCKLED IN AND THAT THE INJURED FLT ATTENDANT WAS SORE BUT WOULD BE OK TO CONTINUE ONWARD.

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.