Aircraft Accident/Incident Report

Caribbean Sea
Friday, July 16, 1993 3:15 AST

NTSB Narrative Summary Released at Completion of Accident

DURING CRUISE FLIGHT AT FLIGHT LEVEL 350, THE FLIGHT ENCOUNTERED THE TOPS OF CIRRUS CLOUDS FOLLOWED SHORTLY THEREAFTER BY TWO SHARP JOLTS OF TURBULENCE WHICH LASTED ABOUT 15 SECONDS. AT THE TIME OF THE ACCIDENT, THE WEATHER RADAR WAS ON AND NO WEATHER WAS DEPICTED. THE FLIGHT CONTINUED TO THE SCHEDULED DESTINATION WHERE THE INJURED FLIGHT ATTENDANTS WERE TREATED.

NTSB Probable Cause Narrative

TURBULENCE ENCOUNTERED DURING CRUISE FLIGHT AFTER ENTERING CIRRUS CLOUDS.

Event Information

Type of Event Accident
Event Date 7/16/1993
Event Day of the Week Friday
Time of Event 315
Event Time Zone Atlantic Standard Time
Event City CARIBBEAN SEA
Event State CARIBBEAN SEA
Event Country --
Zipcode of the event site
Event Date Year 1993
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation 315 Atlantic Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation AST
Lighting Conditions Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None 161
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 1316
NTSB Notification Source --
NTSB Notification Date Jul 16 1993 12:00AM
NTSB Notification Time 1410
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:29PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N645UA
NTSB Number MIA93LA157
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 767-322ER
Aircraft Series Identifier 767-322ER
Aircraft Serial Number 25280
Certified Max Gross Weight 400000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 220
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 5 1992 12:00AM
Airframe hours since last inspection 2896
Airframe Hours 5204
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name WILMINGTON TRUST CO.
Aircraft Owner Street Address RODNEY SQUARE NORTH
Aircraft Owner City WILMINGTON
Aircraft Owner State DE
Aircraft Owner Country
Aircraft Owner Zipcode 19890
Operator is an individual? --
Operator Name UNITED AIR LINES, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 66100
Operator City ELK GROVE
Operator State IL
Operator Country
Operator Zip code 60666
Operator Code UALA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight International
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code SAEZ
Departure City BUENOS AIRES
Departure State OF
Departure Country
Departure Time 2159
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code KJFK
Destination City NEW YORK
Destination State NY
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --