Air carrier widebody transport encounters unexpected CAT over south pacific. Minor passenger injury.

Attributes
ACN	144281
Time
Date	199005
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : hnl
State Reference	HI
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zhn
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : pacific enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 22000 flight time type : 300
ASRS Report	144281
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 8500
ASRS Report	144288
Events
Anomaly	inflight encounter : weather inflight encounter other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Weather
Air Traffic Incident	other

Narrative:

While cruising at 37000' at night, radar on, seat belt off, encountered unexpected and unreported momentary abrupt moderate turbulence lasting less than 30 seconds. No radar returns visible. Slight injuries to passenger in tail of aircraft.

Original NASA ASRS Text

Title: ACR WDB ENCOUNTERS UNEXPECTED CAT OVER SOUTH PACIFIC. MINOR PASSENGER INJURY.

Narrative: WHILE CRUISING AT 37000' AT NIGHT, RADAR ON, SEAT BELT OFF, ENCOUNTERED UNEXPECTED AND UNREPORTED MOMENTARY ABRUPT MODERATE TURB LASTING LESS THAN 30 SECS. NO RADAR RETURNS VISIBLE. SLIGHT INJURIES TO PAX IN TAIL OF ACFT.

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.