B767 crew encountered unrpted severe turbulence in atlantic oceanic airspace.

Attributes
ACN	566692
Time
Date	200211
Day	Sat
Local Time Of Day	1801 To 2400
Place
State Reference	NF
Altitude	msl bound lower : 32000 msl bound upper : 33000
Environment
Flight Conditions	Mixed
Weather Elements	Turbulence other
Light	Night
Aircraft 1
Controlling Facilities	artcc : czqx.artcc tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute : atlantic
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : czqx.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	controller military : 7.5
ASRS Report	566692
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter other other anomaly other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude flight crew : regained aircraft control none taken : detected after the fact
Miss Distance	horizontal : 0 vertical : 750
Supplementary
Problem Areas	Weather
Primary Problem	Weather

Narrative:

On nat track west at 53 mi west entered cloud deck and encountered severe turbulence resulting in an uncommanded climb in a wave of approximately 250 ft. This resulted in a TCASII RA with the aircraft above us at FL330. We were so absorbed with maintaining control of the aircraft that we weren't aware of the minimal separation with this aircraft. We heard the RA to descend and knew the desired rate, but couldn't respond under our current conditions. It's not likely, but if this happened again with the same conditions, I might try to make a radio call, 'severe turbulence, track west, FL320, aircraft is climbing.'

Original NASA ASRS Text

Title: B767 CREW ENCOUNTERED UNRPTED SEVERE TURB IN ATLANTIC OCEANIC AIRSPACE.

Narrative: ON NAT TRACK W AT 53 MI W ENTERED CLOUD DECK AND ENCOUNTERED SEVERE TURB RESULTING IN AN UNCOMMANDED CLB IN A WAVE OF APPROX 250 FT. THIS RESULTED IN A TCASII RA WITH THE ACFT ABOVE US AT FL330. WE WERE SO ABSORBED WITH MAINTAINING CTL OF THE ACFT THAT WE WEREN'T AWARE OF THE MINIMAL SEPARATION WITH THIS ACFT. WE HEARD THE RA TO DSND AND KNEW THE DESIRED RATE, BUT COULDN'T RESPOND UNDER OUR CURRENT CONDITIONS. IT'S NOT LIKELY, BUT IF THIS HAPPENED AGAIN WITH THE SAME CONDITIONS, I MIGHT TRY TO MAKE A RADIO CALL, 'SEVERE TURB, TRACK W, FL320, ACFT IS CLBING.'

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.