Cabin injury caused by turbulence.

Attributes
ACN	319597
Time
Date	199510
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : gnd
State Reference	FO
Altitude	msl bound lower : 39000 msl bound upper : 40000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : ttzp
Operator	common carrier : air carrier
Make Model Name	Balloon
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : atlantic enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 161 flight time total : 15000 flight time type : 1200
ASRS Report	319597
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	inflight encounter : weather inflight encounter other other anomaly
Independent Detector	other controllera other flight crewa other other : unspecified
Resolutory Action	none taken : insufficient time
Consequence	other
Supplementary
Primary Problem	Weather
Air Traffic Incident	other

Narrative:

The WX was cavu at night, no moon, stars visible, air smooth. At 50 northwest ground, we hit severe turbulence and gained 1000 ft within 10 seconds. The first officer and I saw a static discharge on the windshield and a puff of cloud. Nothing was indicating on the radar or out the window. The turbulence only lasted for 10 seconds and we returned immediately to smooth air and, with the autoplt now disconnected, returned to 39000 ft. ATC (piarco) was calling. We explained what happened and gave them the coordinates to pass to other aircraft on that airway. The seat belt sign had been off for about 2 hours in smooth air. Everyone was seated, most sleeping, except for 1 flight attendant working the rear galley. She was thrown to the floor and received minor bruises. She was examined by a doctor on board and later in the hospital at mia. Minor bruises. Flight landed ok in mia and checked ok by maintenance.

Original NASA ASRS Text

Title: CABIN INJURY CAUSED BY TURB.

Narrative: THE WX WAS CAVU AT NIGHT, NO MOON, STARS VISIBLE, AIR SMOOTH. AT 50 NW GND, WE HIT SEVERE TURB AND GAINED 1000 FT WITHIN 10 SECONDS. THE FO AND I SAW A STATIC DISCHARGE ON THE WINDSHIELD AND A PUFF OF CLOUD. NOTHING WAS INDICATING ON THE RADAR OR OUT THE WINDOW. THE TURB ONLY LASTED FOR 10 SECONDS AND WE RETURNED IMMEDIATELY TO SMOOTH AIR AND, WITH THE AUTOPLT NOW DISCONNECTED, RETURNED TO 39000 FT. ATC (PIARCO) WAS CALLING. WE EXPLAINED WHAT HAPPENED AND GAVE THEM THE COORDINATES TO PASS TO OTHER ACFT ON THAT AIRWAY. THE SEAT BELT SIGN HAD BEEN OFF FOR ABOUT 2 HRS IN SMOOTH AIR. EVERYONE WAS SEATED, MOST SLEEPING, EXCEPT FOR 1 FLT ATTENDANT WORKING THE REAR GALLEY. SHE WAS THROWN TO THE FLOOR AND RECEIVED MINOR BRUISES. SHE WAS EXAMINED BY A DOCTOR ON BOARD AND LATER IN THE HOSPITAL AT MIA. MINOR BRUISES. FLT LANDED OK IN MIA AND CHKED OK BY MAINT.

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.