<< >> NASA ASRS Report 498840, January 2001

Air carrier flight crew encounter turbulence while overflying atlantic. 3 flight attendants receive minor injuries.

Attributes
ACN	498840
Time
Date	200101
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : dotty
State Reference	FO
Altitude	msl bound lower : 38800 msl bound upper : 39200
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Night
Aircraft 1
Controlling Facilities	artcc : czqm.artcc
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 205 flight time total : 30000 flight time type : 700
ASRS Report	498840
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude cabin event other inflight encounter : weather inflight encounter : turbulence
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Weather

Narrative:

Encountered severe turbulence for about 1 min at FL390 .82 mach. Aircraft +/-200 ft, +/-15 KTS, 20 degree roll. Wind went from 270 degrees 145 KTS to 270 degrees 195 KTS. Did not notice change in surface air temperature. Aircraft on autoplt and autothrust and handled it well. Descended to FL370, out of FL380, it was almost smooth. No passenger injuries reported. 3 minor flight attendant injuries -- bruises only. Flight attendants were seen by doctor in frankfurt, germany. Maintenance in frankfurt was advised, also our dispatcher and moncton center. Light turbulence had been reported in the area, the seatbelt sign was on, and I had made 2 announcements warning of light turbulence.

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Original NASA ASRS Text

Title: ACR FLC ENCOUNTER TURB WHILE OVERFLYING ATLANTIC. 3 FLT ATTENDANTS RECEIVE MINOR INJURIES.

Narrative: ENCOUNTERED SEVERE TURB FOR ABOUT 1 MIN AT FL390 .82 MACH. ACFT +/-200 FT, +/-15 KTS, 20 DEG ROLL. WIND WENT FROM 270 DEGS 145 KTS TO 270 DEGS 195 KTS. DID NOT NOTICE CHANGE IN SURFACE AIR TEMP. ACFT ON AUTOPLT AND AUTOTHRUST AND HANDLED IT WELL. DSNDED TO FL370, OUT OF FL380, IT WAS ALMOST SMOOTH. NO PAX INJURIES RPTED. 3 MINOR FLT ATTENDANT INJURIES -- BRUISES ONLY. FLT ATTENDANTS WERE SEEN BY DOCTOR IN FRANKFURT, GERMANY. MAINT IN FRANKFURT WAS ADVISED, ALSO OUR DISPATCHER AND MONCTON CTR. LIGHT TURB HAD BEEN RPTED IN THE AREA, THE SEATBELT SIGN WAS ON, AND I HAD MADE 2 ANNOUNCEMENTS WARNING OF LIGHT TURB.

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.