Aircraft Accident/Incident Report

San Juan
Saturday, January 20, 1990 AST

NTSB Narrative Summary Released at Completion of Accident

THE AIRPLANE WAS IN A NORMAL DESCENT FROM FL370 IN PREPARATION FOR ARRIVAL AT THE DESTINATION. AS THE DESCENT CONTINUED THROUGH FL 230 THE FLIGHT EXPERIENCED 2 TURBULENCE EVENTS AND 2 PASSENGERS RECEIVED SERIOUS INJURIES AND 37 PASSENGERS AND 8 FLIGHT ATTENDANTS RECEIVED MINOR INJURIES. THE FLIGHT WAS OPERATING ON A MOONLESS NIGHT AND THE WEATHER AVOIDANCE RADAR WAS ON BUT NOTHING WAS OBSERVED ON THE RADAR.

NTSB Probable Cause Narrative

INADVERTENT FLIGHT OF THE AIRPLANE INTO AN AREA OF TURBULENCE ASSOCIATED WITH A DEVELOPING RAIN STORM.

Event Information

Type of Event Accident
Event Date 1/20/1990
Event Day of the Week Saturday
Time of Event 50
Event Time Zone Atlantic Standard Time
Event City SAN JUAN
Event State PUERTO RICO
Event Country --
Zipcode of the event site 00913
Event Date Year 1990
Event Date Month 1
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 53 Atlantic Standard Time
Direction of event from weather observation facility (degrees) 125
Weather Observation Facility ID SJU
Elevation of weather observation facility 12
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation AST
Lighting Conditions Night/Dark
Lowest Ceiling Height 4000
Lowest Non-Ceiling Height 2000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 12
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 21
Wind Direction (degrees magnetic) 120
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 45
Injury Total None 100
Injury Total Serious 2
Injury Total All 47
Investigating Agency NTSB
NTSB Docket Number (internal use) 1125
NTSB Notification Source --
NTSB Notification Date Jan 20 1990 12:00AM
NTSB Notification Time 240
Fiche Number and/or location -used to find docket information 42344
Date of most recent change to record Dec 12 2000 4:44PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N124AA
NTSB Number MIA90LA058
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 MCDONNELL DOUGLAS
Aircraft Model DC-10-10
Aircraft Series Identifier DC-10-10
Aircraft Serial Number
Certified Max Gross Weight 430000
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 290
Number of Engines 3
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AMERICAN AIRLINES
Aircraft Owner Street Address P.O. BOX 619616
Aircraft Owner City DALLAS FT WORTH
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 75261
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code AALA
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 Domestic
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 EWR
Departure City NEWARK
Departure State NJ
Departure Country
Departure Time 2045
Departure Time Zone EST
Destination Same as Local Flt crash at destination city
Destination Airport Code SJU
Destination City SAN JUAN
Destination State PR
Destination Country
Specific Phase of Flight Descent
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 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --