Aircraft Accident/Incident Report

Dallas, Texas 79601
Sunday, April 2, 2000 22:06 CDT

NTSB Narrative Summary Released at Completion of Accident

While cruising at FL310, the captain observed on radar that the airplane was approaching a line of thunderstorm cells, which had been forecast. The captain advised the first flight attendant to expect turbulence. He turned on the fasten seat belt sign, and he directed that cabin service be suspended and the service carts stowed. The first flight attendant notified the other flight attendants of the captain's instructions. She stated that she directed them to "stop service and take their seats immediately." The flight attendants secured the cabin, which took a few minutes. However, they had not taken their seats when the airplane encountered several jolts of moderate turbulence. The airplane's flight data recorder indicated that within a 1/2-second period the vertical acceleration changed from -0.05G to +2.37Gs. The first flight attendant (front cabin) was knocked off her feet. The three flight attendants in the aft galley were thrown upward but did not strike the ceiling before coming back down and falling to the floor. One was seriously injured. The operator's "InFlight Operations Manual" required the flight crew to use standard terminology during briefings to the flight attendants. The descriptive terms include usage of the words "light, moderate, or severe" when describing expected turbulence. Neither the captain nor any of the flight attendants reported having used/heard these terms regarding the anticipated turbulence intensity.

NTSB Probable Cause Narrative

The en route cruise encounter with forecast moderate turbulence.

Event Information

Type of Event Accident
Event Date 4/2/2000
Event Day of the Week Sunday
Time of Event 2206
Event Time Zone Central Daylight Time
Event City DALLAS
Event State TEXAS
Event Country --
Zipcode of the event site 79601
Event Date Year 2000
Event Date Month 4
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 Weather Observation Facility
Time of the weather observation 2053 Central Daylight Time
Direction of event from weather observation facility (degrees) 350
Weather Observation Facility ID DFW
Elevation of weather observation facility 559
Distance of event from weather observation facility (units?) 38
Time Zone of the weather observation CDT
Lighting Conditions Night/Dark
Lowest Ceiling Height 10000
Lowest Non-Ceiling Height 3600
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) 9
Air Temperature at event time (in degrees celsius) 57
Dew Point at event time (in degress fahrenheit) 52
Wind Direction (degrees magnetic) 120
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
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 196
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 10882
NTSB Notification Source --
NTSB Notification Date Apr 3 2000 12:00AM
NTSB Notification Time 145
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Nov 1 2001 7:36AM
User who most recently changed record NTSB\MONR
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N910AW
NTSB Number LAX00LA146
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 757-2G7
Aircraft Series Identifier 757-2G7
Aircraft Serial Number 24523
Certified Max Gross Weight 240000
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 190
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Mar 27 2000 12:00AM
Airframe hours since last inspection --
Airframe Hours 42917
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AMERICA WEST AIRLINES, INC.
Aircraft Owner Street Address WILMINGTON TRUST, TRUSTEE
Aircraft Owner City WILMINGTON
Aircraft Owner State DE
Aircraft Owner Country
Aircraft Owner Zipcode 19890
Operator is an individual? --
Operator Name AMERICA WEST AIRLINES, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 4000 EAST SKY HARBOR BLVD.
Operator City PHOENIX
Operator State AZ
Operator Country
Operator Zip code 85034
Operator Code AWXA
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 MCO
Departure City ORLANDO
Departure State FL
Departure Country
Departure Time 2037
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code LAS
Destination City LAS VEGAS
Destination State NV
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 20 2002 12:42PM
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 --