Clear air turbulence -- emergency declared.

Attributes
ACN	290818
Time
Date	199412
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lax
State Reference	CA
Altitude	msl bound lower : 26000 msl bound upper : 32000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : oak
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other descent other other
Route In Use	enroute : pacific enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 240 flight time total : 4000 flight time type : 2000
ASRS Report	290818
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 225 flight time total : 24000 flight time type : 2000
ASRS Report	291080
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : exited adverse environment other
Consequence	Other
Supplementary
Primary Problem	Weather

Narrative:

Encountered severe turbulence. To avoid aircraft damage and passenger injury declared emergency, turned 90 degrees to the right of track R577 (hnl-lax) and paralleled track to 20 mi south. With request for FL260 on file. Advised other aircraft on VHF 121.5 that we could no longer maintain altitude and intended to vacate FL320 for FL260. Contacted sf radio and received ATC clearance to maintain FL260 and proceed on course. Rest of flight proceeded uneventfully.

Original NASA ASRS Text

Title: CLR AIR TURB -- EMER DECLARED.

Narrative: ENCOUNTERED SEVERE TURB. TO AVOID ACFT DAMAGE AND PAX INJURY DECLARED EMER, TURNED 90 DEGS TO THE R OF TRACK R577 (HNL-LAX) AND PARALLELED TRACK TO 20 MI S. WITH REQUEST FOR FL260 ON FILE. ADVISED OTHER ACFT ON VHF 121.5 THAT WE COULD NO LONGER MAINTAIN ALT AND INTENDED TO VACATE FL320 FOR FL260. CONTACTED SF RADIO AND RECEIVED ATC CLRNC TO MAINTAIN FL260 AND PROCEED ON COURSE. REST OF FLT PROCEEDED UNEVENTFULLY.

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.